UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the month of May 2021

Commission File Number 001—32945

WNS (HOLDINGS) LIMITED

(Translation of Registrant’s name into English)

Gate 4, Godrej & Boyce Complex

Pirojshanagar, Vikhroli (W)

Mumbai 400 079, India

+91-22-4095-2100

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  ☑                  Form 40-F  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

TABLE OF CONTENTS

WNS (Holdings) Limited is incorporating by reference the information and exhibits set forth in this Form 6-K into its registration statements on Form S-8 filed on July 31, 2006 (File No: 333-136168), Form S-8 filed on February 17, 2009 (File No. 333-157356), Form S-8 filed on September 15, 2011 (File No. 333-176849), Form S-8 filed on September 27, 2013 (File No. 333-191416), Form S-8 filed on October 11, 2016 (File No. 333-214042) Form S-8 filed on October 31, 2018 (File No. 333-228070) and Form S-8 filed on October 21, 2020 (File No. 333-249577 ).

Other Events

On May 18, 2021, WNS (Holdings) Limited (the “Company”) announced the appointment of Tim Main to the Company’s Board of Director effective June 1, 2021.

A copy of the press release dated May 18, 2021 is attached hereto as Exhibit 99.1.

Exhibit

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: May 18, 2021

EXHIBIT INDEX

Exhibit 99.1

WNS Announces Addition of Tim Main to Board of Directors

NEW YORK and MUMBAI, May 18, 2021 — WNS (Holdings) Limited (NYSE: WNS), a leading provider of global Business Process Management (BPM) solutions, today announced the appointment of Timothy L. Main to the company’s Board of Directors effective June 1, 2021. Tim has spent his entire career in a B2B services/outsourcing environment, including more than 25 years with Jabil, Inc. (NYSE: JBL), a leading provider of manufacturing services with a global operational footprint. At Jabil, Tim worked his way from a Production Control Manager position to eventually serve as President, Chief Executive Officer, and Chairman of the Board. During his 13-year tenure as Chief Executive Officer of Jabil, he led the company’s transformation and growth to a $17+ billion, 100,000 employee organization through organic growth and strategic acquisitions. Tim is currently non-executive Chairman of the Board of Directors and a member of the Cyber Committee at Jabil. In addition, he serves on the Board of Quest Diagnostics (NYSE: DGX) as Chair of the Cybersecurity Committee and a member of the Audit & Finance and Governance committees, and on the Board of SCP & CO Healthcare Acquisition Co. (NASDAQ: SHAC), where he serves as a member of the Audit & Finance Committee.

“Tim is a proven leader with a distinguished track record in international operations, corporate governance, vision and strategy, and technology-led growth,” said Adrian T. Dillon, WNS’s Chairman of the Board. “We are pleased to welcome Tim to the WNS Board of Directors, and believe that his experience guiding large organizations and developing talent will be a tremendous asset to the company.”

“The WNS team is delighted to add an experienced executive like Tim to our Board,” said Keshav R. Murugesh, Chief Executive Officer of WNS. “His background in leading high-performing teams, driving both organic and inorganic revenue growth, and managing global operations will help WNS continue to generate exceptional value for all of our key stakeholders.”

About WNS

WNS (Holdings) Limited (NYSE: WNS) is a leading Business Process Management (BPM) company. WNS combines deep industry knowledge with technology, analytics and process expertise to co-create innovative, digitally led transformational solutions with over 375 clients across various industries. WNS delivers an entire spectrum of BPM solutions including industry-specific offerings, customer interaction services, finance and accounting, human resources, procurement, and research and analytics to re-imagine the digital future of businesses. As of March 31, 2021, WNS had 43,997 professionals across 58 delivery centers worldwide including facilities in Australia, China, Costa Rica, India, the Philippines, Poland, Romania, South Africa, Spain, Sri Lanka, Turkey, the United Kingdom, and the United States. For more information, visit www.wns.com.

Safe Harbor Provision

This document includes information which may constitute forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, the accuracy of which are necessarily subject to risks, uncertainties, and assumptions as to future events. Factors that could cause actual results to differ materially from those expressed or implied are discussed in our most recent Form 20-F and other filings with the Securities and Exchange Commission. WNS undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.

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