Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Form 11-K

x ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2011

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission File No. 1-32876

A. Full title of the plan and address of the plan, if different from that of the issuer named below:

Wyndham Worldwide Corporation

Employee Savings Plan

B. Name of issuer of the securities held pursuant to the plan and the address of its principal executive office:

Wyndham Worldwide Corporation

22 Sylvan Way

Parsippany, New Jersey 07054

Table of Contents

WYNDHAM WORLDWIDE CORPORATION EMPLOYEE SAVINGS PLAN

TABLE OF CONTENTS

All other schedules required by Section 2520.103-10 of the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974 have been omitted because they are not applicable.

Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Plan Administrator and Participants

of the Wyndham Worldwide Corporation Employee Savings Plan

We have audited the accompanying statement of assets available for benefits of the Wyndham Worldwide Corporation Employee Savings Plan (the “Plan”) as of December 31, 2011, and the related statement of changes in assets available for benefits for the year then ended. These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statements based on our audit.

We conducted our audit in accordance with standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audit included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Plan’s internal control over financial reporting. Accordingly, we express no such opinion. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the assets available for benefits of the Plan as of December 31, 2011, and the changes in assets available for benefits for the year then ended, in conformity with accounting principles generally accepted in the United States of America.

Our audit was performed for the purpose of forming an opinion on the basic 2011 financial statements taken as a whole. The supplemental schedule of assets (held at end of year) as of December 31, 2011 and supplemental schedule of delinquent participant contributions for the year ended December 31, 2011 are presented for the purpose of additional analysis and are not a required part of the basic financial statements, but are supplemental information required by the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. The supplemental schedules are the responsibility of the Plan’s management. The supplemental schedules have been subjected to the auditing procedures applied in the audit of the basic financial statements and, in our opinion, are fairly stated, in all material respects, in relation to the basic financial statements taken as a whole.

/s/ EISNERAMPER LLP

Edison, New Jersey

June 20, 2012

1

Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Trustees and Participants of the Wyndham Worldwide Corporation Employee Savings Plan:

We have audited the accompanying statement of assets available for benefits of the Wyndham Worldwide Corporation Employee Savings Plan (the “Plan”) as of December 31, 2010, and the related statement of changes in assets available for benefits for the year then ended. These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statements based on our audit.

We conducted our audit in accordance with standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audit included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Plan’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, such financial statements present fairly, in all material respects, the assets available for benefits of the Plan as of December 31, 2010, and the changes in assets available for benefits for the year then ended in conformity with accounting principles generally accepted in the United States of America.

/s/ Deloitte & Touche LLP

Parsippany, New Jersey

June 24, 2011

2

Table of Contents

WYNDHAM WORLDWIDE CORPORATION EMPLOYEE SAVINGS PLAN

STATEMENTS OF ASSETS AVAILABLE FOR BENEFITS

AS OF DECEMBER 31, 2011 AND 2010

The accompanying notes are an integral part of these financial statements.

3

Table of Contents

WYNDHAM WORLDWIDE CORPORATION EMPLOYEE SAVINGS PLAN

STATEMENTS OF CHANGES IN ASSETS AVAILABLE FOR BENEFITS FOR THE YEARS ENDED

DECEMBER 31, 2011 AND 2010

The accompanying notes are an integral part of these financial statements.

4

Table of Contents

WYNDHAM WORLDWIDE CORPORATION EMPLOYEE SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS

The following brief description of the Wyndham Worldwide Corporation Employee Savings Plan (the “Plan”) is provided for general information purposes only. Participants should refer to the Plan document for a more complete description of the Plan’s provisions.

General—The Plan is a defined contribution plan subject to the provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”). The Plan was formed on August 1, 2006 in connection with Wyndham Worldwide Corporation’s (the “Company”) separation from Cendant Corporation.

Bank of America Trust Company, N.A. (the “Trustee”) is the Plan’s trustee. Wyndham Worldwide Corporation Employee Benefits Committee (the “Plan Administrator”) controls and manages the operation and administration of the Plan. Under the terms of a trust agreement between the Trustee and the Company, contributions to the Plan are deposited with the Trustee and maintained in a trust on behalf of the Plan. The Plan Administrator has granted discretionary authority to one or more investment managers appointed by the Plan Administrator.

During December 2011, assets of approximately $9.8 million associated with the ResortQuest International, LLC 401(k) Savings Plan (“ResortQuest Plan”) were merged into the Plan. Fidelity Management Trust Company (“Fidelity”) was the trustee of the ResortQuest Plan. As of December 31, 2011, all investments held by Fidelity were transferred to the Trustee.

The following is a summary of certain Plan provisions:

Eligibility—Excluding employees of Wyndham Hotel Management, Inc. and employees working at the Wyndham Rio Mar location in Puerto Rico, each regular U.S. employee (as defined in the Plan document) of the Company hired on or after July 1, 2007 is eligible to participate in the Plan and receive employer matching contributions following the later of one year of employment or the attainment of age eighteen.

Excluding employees of Wyndham Hotel Management, Inc. and employees working at the Wyndham Rio Mar location in Puerto Rico, each regular U.S. employee hired prior to July 1, 2007 was eligible to participate in the Plan following the later of commencement of employment or the attainment of age eighteen and receive employer matching contributions following one year of employment.

Excluding employees of Wyndham Hotel Management, Inc. and employees working at the Wyndham Rio Mar location in Puerto Rico, each part-time U.S. employee (as defined in the Plan document) of the Company is eligible to participate in the Plan and receive employer matching contributions following the later of one year of eligible service (as defined in the Plan document) or the attainment of age eighteen.

As of January 1, 2011, employees of ResortQuest who meet the eligibility requirements of the Plan were eligible to participate in the Plan.

Contributions—Each year, participants may contribute up to 20% of their pretax annual compensation, as defined in the Plan, subject to certain Internal Revenue Code (“IRC”) limitations. The Company makes a matching contribution in the amount of 100% of the first 6% of compensation (as defined in the Plan document) that a participant contributes to the Plan on a payroll period basis. Participants who have attained age 50 before the end of the Plan year are eligible to make catch-up contributions. Participants may also contribute amounts representing distributions from other qualified defined contribution plans.

Participant Accounts—Individual accounts are maintained for each Plan participant. Each participant’s account is credited with the participant’s contribution, the Company’s matching contribution, and Plan earnings, and charged with withdrawals and an allocation of Plan losses. Allocations are based on participant earnings or account balances, as defined. The benefit to which a participant is entitled is the benefit that can be provided from the participant’s vested account.

Investments—Participants direct the investment of their contributions into various investment options offered by the Plan. Contributions are limited a maximum of 25% into Wyndham Worldwide Corporation common stock. The Plan currently offers mutual funds, common collective trusts, a money market fund and Wyndham Worldwide Corporation common stock as investment options for participants.

5

Table of Contents

Vesting—Participants are 100% vested immediately in their contributions, employer contributions plus actual earnings thereon.

Notes Receivable from Participants—Notes receivable from participants are measured at their unpaid principal balance plus any accrued interest. Participants may borrow from their fund accounts up to a maximum of $50,000 or 50% of their account balance, whichever is less (provided the vested balance is at least $1,000). The initial principal amount of the loan may not be less than $500. The loans are secured by the balance in the participant’s account and bear interest at rates commensurate with local prevailing rates at the time funds are borrowed as determined quarterly by the Plan administrator. Principal and interest is paid ratably through payroll deductions. Delinquent participant loans are recorded as distributions based on the terms of the Plan document.

Payment of Benefits—On termination of service, a participant may receive a lump-sum amount equal to the value of the participant’s vested interest in his or her account.

Forfeited Accounts—As all employer matched amounts are 100% vested, the Plan does not have any forfeitures. Prior to being merged into the Plan, the ResortQuest Plan recorded forfeitures of $704. Such forfeitures were merged into the Plan during December 2011 and will be used during 2012 to reduce employer contributions.

Basis of Accounting—The accompanying financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America.

Use of Estimates—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and changes therein and disclosure of contingent assets and liabilities. Actual results could differ from those estimates.

Risks and Uncertainties—The Plan contains investments in mutual funds, common/collective trusts and common stock. Investment securities, in general, are exposed to various risks, such as interest rate and credit risk and overall market volatility. Due to the level of risk associated with certain investment securities, it is reasonably possible that changes in the values of the Plan’s investment securities will occur in the near term and that such changes would materially affect the amounts reported in the Plan’s financial statements.

Cash and Cash Equivalents—The Plan considers highly-liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Administrative Expenses—Administrative expenses are paid by the Company, pursuant to the Plan document.

Payment of Benefits—Benefit payments to participants are recorded when paid. Amounts allocated to accounts of participants who have elected to withdraw from the Plan but have not yet been paid were $334,313 and $386,341 at December 31, 2011 and 2010, respectively.

Valuation of Investments and Income Recognition—The Plan’s investments are stated at fair value. Fair value of a financial instrument is the prices that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Securities traded on a national securities exchange, such as common stock, are valued at the last reported sales price on the last business day of the Plan year. Mutual funds and the money market fund are valued at the quoted market price, which represents the net asset value of shares held by the Plan at year-end. The group annuity contract is valued at the amount reported by the annuity provider, as determined by the method outlined in the annuity contract. Common/collective trusts are valued at the net asset value of the shares held by the Plan at year-end, which is based on the fair value of the underlying assets.

A portion of the Plan’s investments in common/collective trusts consisted of the Bank of America Retirement Preservation Trust (the “RPT”) as of December 31, 2010. The RPT had primarily invested in synthetic guaranteed investment contracts (“SGICs”) that were primarily collateralized by graded debt securities and were valued at the fair value of the underlying investments and then adjusted by the issuer to contract value. On October 6, 2010, the Trustee approved a resolution to

6

Table of Contents

terminate the RPT. Concurrent with this resolution, the RPT changed from a stable value fund to a short-term bond fund which resulted in a change in the investment valuation method in the Plan’s financial statements from contract value to fair value. The Plan’s investment in the RPT was converted at contract value on October 6, 2010 and did not incur any losses as a result of the change from a stable value fund to a short-term bond fund. As of December 31, 2010, the RPT invested in short-term U.S. government backed notes and treasury obligations which were valued at the fair value of the underlying investments. The fair value recorded in the Plan’s financial statements for such fund was $47.3 million at December 31, 2010.

On February 14, 2011, the Trustee approved a resolution to terminate the RPT. The trustee converted the assets of the RPT to the Wells Fargo Stable Return Fund (“the SRF”), a common/collective trust fund, resulting in a change in investment valuation method from fair value to contract value. The SRF invests primarily in both security-backed contracts (“SBCs”) (also known as SGICS and guaranteed investment contracts (“GICs”)) issued by insurance companies and other financial institutions. SBCs are collateralized by a portfolio of bonds and are valued at the fair value of the underlying portfolio. The wrapper contracts are valued by determining the difference between the present value of the replacement cost of the wrapper contract and the present value of the contractually obligated payments in the original wrapper contract. The crediting interest rate is based on a formula agreed upon with the issuer, but it may not be less than zero percent. Such interest rates are reviewed on a quarterly basis for resetting. The GICs are issued at fixed rates and carried at contract value. The contract value represents contributions, plus earnings and accrued interest, less any participant-directed withdrawals. Participants may ordinarily direct the withdrawals or transfers of all or a portion of their investment at contract value. The fair value recorded in the Plan’s financial statements for such fund was $54.0 million and contract value of $52.6 million as of December 31, 2011.

Purchases and sales of securities are recorded on a trade-date basis. Dividends are recorded on the ex-dividend date and interest is recorded when earned. The accompanying Statements of Changes in Assets Available for Benefits present net appreciation in fair value of investments, which includes unrealized gains and losses on investments held at December 31, 2011 and 2010, realized gains and losses on investments sold during the years ended December 31, 2011 and 2010 and management and operating expenses associated with the Plan’s investments in mutual funds and collective trusts.

Management fees and operating expenses charged to the Plan for investments in the mutual funds are deducted from income earned on a daily basis and are not separately reflected. Consequently, management fees and operating expenses are reflected as a reduction of investment return for such investments.

Fully Benefit-Responsive Investment Contracts—In accordance with guidance issued by the Financial Accounting Standards Board (“FASB”) for reporting of fully benefit-responsive contracts held by certain investment companies subject to the AICPA investment company guide and defined-contribution health and welfare and pension plans, the statements of assets available for benefits presents investment contracts at fair value as well as an additional line item showing an adjustment of fully benefit-responsive investment contracts from fair value to contract value. For the year ended December 31, 2011, the statement of changes in assets available for benefits is presented on a contract value basis. The fair value of the contract is determined by multiplying the contract value by a ratio of the fair value of total assets held in the SRF divided by the contract value of net assets held in the SRF. At December 31, 2010, as a result of the change to the stable value fund, contract value no longer applied to the RPT due to the changes in the underlying investments.

New Accounting Pronouncements

Fair Value Measurement—In May 2011, the FASB issued guidance which generally provides a consistent definition of fair value and ensures that the fair value measurement and disclosure requirements are similar between U.S. GAAP and International Financial Reporting Standards. The guidance changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements. This guidance is effective for interim and annual reporting periods beginning after December 15, 2011 and shall be applied on a prospective basis. The Plan will adopt the guidance on January 1, 2012, as required and believes the adoption of this guidance will not have a material impact on the Plan’s financial statements.

The Internal Revenue Service (“IRS”) has determined and informed the Company by a letter dated September 16, 2008, that the Plan is qualified and the trust established under the plan is tax-exempt, under the appropriate sections of the IRC. The Plan has been amended since receiving the determination letter. However, the Plan Administrator and the Plan’s tax counsel believe that the Plan is currently designed and being operated in compliance with the applicable requirements of the IRC. Therefore, there was no provision for income taxes as of the financial statement date.

7

Table of Contents

Accounting principles generally accepted in the United States of America require plan management to evaluate tax positions taken by the Plan and recognize a tax liability (or asset) if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by a government authority. The Plan Administrator has analyzed the tax positions taken by the Plan, and has concluded that as of December 31, 2011, there are no uncertain positions taken or expected to be taken that would require recognition of a liability (or asset) or disclosure in the financial statements. The Plan is subject to routine audits by taxing jurisdictions; however there currently no audits for any tax periods in progress. See Note 7: Department of Labor Audit for additional information on the audit which occurred for plan years 2007 through 2011.

The following table presents investments at fair value that represent five percent or more of the Plan’s assets available for benefits at fair value as of December 31:

During the years ended December 31, 2011 and 2010, the Plan’s investments (including gains and losses on investments bought and sold, as well as held during the period) (depreciated)/appreciated in value as follows:

8

Table of Contents

The guidance for fair value measurement requires additional disclosures about the Plan’s assets and liabilities that are measured at fair value. The following tables present information about the Plan’s financial assets that are measured at fair value on a recurring basis and indicates the fair value hierarchy of the valuation techniques utilized by the Plan to determine such fair values. Financial assets carried at fair value are classified and disclosed in one of the following three categories:

Level 1: Quoted prices for identical instruments in active markets.

Level 2: Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value driver is observable.

Level 3: Unobservable inputs used when little or no market data is available.

In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy within which the fair value measurement falls has been determined based on the lowest level input (closest to Level 3) that is significant to the fair value measurement. The Plan’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset.

9

Table of Contents

For both the years ended December 31, 2011 and 2010, there were no significant transfers into or out of Levels 1, 2 or 3.

A portion of the Plan’s investments includes shares of mutual funds that are managed by the Trustee. The Trustee is the custodian of these investments as defined by the Plan, and, therefore, these transactions qualify as exempt party-in-interest transactions.

Management fees and operating expenses charged to the Plan for investments in the mutual funds are deducted from income earned on a daily basis and are not separately reflected. Consequently, management fees and operating expenses are reflected as a reduction of investment return for such investments.

The Plan held approximately 753,000 and 794,000 shares of common stock of Wyndham Worldwide Corporation as of December 31, 2011 and 2010, respectively, with a cost basis of approximately $23.3 million and $17.8 million, respectively, and a fair value of approximately $28.5 million and $23.8 million, respectively. During the year ended December 31, 2010, the Plan recorded dividend income of approximately $0.9 million from its investments in RPT.

10

Table of Contents

The Plan has undergone an audit by the Department of Labor (the “DOL”) for plan years 2007 through 2011. The DOL informed the Company that it had found the remittance of certain participants’ contributions and loan repayments to the Plan exceeded the required time frame as determined by the DOL. The DOL determines the required time frame based on the date such contributions or repayments can reasonably be separated from the Company’s assets. The Company agreed to restore lost earnings as identified by the DOL and to make certain prospective changes to its remittance process.

The Company filed Form 5330 and paid all applicable excise tax and restored the lost earnings to participants. The excise tax payments were paid from the Company’s assets and not from assets of the Plan. Lost earnings amounted to $138,364, which were deposited into the Plan in May 2012 and are included in the statement of assets available for benefits as of December 31, 2011 within employer contribution receivable.

Although it has not expressed any intention to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions set forth in ERISA.

In accordance with the guidance for fair value measurements in certain entities that calculate Net Asset Value (“NAV”) per share (or its equivalents), the Plan expanded its disclosures to include the category, fair value, redemption frequency and redemption notice period for those assets whose fair value is estimated using the NAV per share.

The following table sets forth a summary of the Plan’s investments with a reported NAV at December 31, 2011:

11

Table of Contents

The following table sets forth a summary of the Plan’s investments with a reported NAV at December 31, 2010:

The following is a reconciliation of assets available for benefits per the financial statements to Form 5500 at December 31:

The following is a reconciliation of benefits paid to participants per the financial statements to Form 5500 at December 31:

Amounts allocated to withdrawing participants are recorded on the Form 5500 for benefit claims that have been processed and approved for payment prior to December 31, 2011, but not yet paid as of that date.

12

Table of Contents

The following is a reconciliation of the increase in assets per the financial statements to Form 5500 at December 31:

*****

13

Table of Contents

Wyndham Worldwide Employee Savings Plan

Form 5500, Schedule H, Part IV, Line 4i – Schedule of Assets (Held at End of Year)

As of December 31, 2011

14

Table of Contents

Wyndham Worldwide Employee Savings Plan

Form 5500, Schedule H, Part IV, Line 4a – Schedule of Delinquent Participant Contributions

For The Year Ended December 31, 2011

Did the employer fail to transmit to the plan any participant contributions within the time period described in 29 CFR 2510.3-102?

Yes  x    No  ¨

During 2011, as a result of a DOL audit, the Plan’s management calculated lost interest of $138,364 due to the delinquent remittances of participant contributions. The lost interest was reimbursed to the Plan in May 2012. This amount is included within employer contributions in the Statement of Changes in Assets Available for Benefits.

15

Table of Contents

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Employee Benefits Committee of the Wyndham Worldwide Corporation Employee Savings Plan (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: June 20, 2012

16