6-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TORULE 13a-16 OR 15d-16 UNDER THESECURITIES EXCHANGE ACT OF 1934

Forthe month of May 2025

Commission File Number: 001-34656

H World Group Limited

(Registrant’s name)

No. 1299 Fenghua Road

Jiading District

ShanghaiPeople’s Republic of China(86) 21 6195-2011 ****(Address of principal executive office)

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

Form 20-F x   Form 40-F ¨

EXHIBIT INDEX

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SIGNATURES

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.

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Exhibit 99.1

Hong Kong Exchanges and Clearing Limited andThe Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to itsaccuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the wholeor any part of the contents of this announcement.

H World Group Limited

華住集團有限公司

(Formerly known as HuazhuGroup Limited)

(Incorporated in theCayman Islands with limited liability)

(Stock Code: 1179)

DATE OF AUDIT COMMITTEEMEETING

AND

2025 FIRST QUARTER FINANCIALRESULTS

ANNOUNCEMENT DATE

H World Group Limited (the “Company”) announces that a meeting of the audit committee of the board of directors of the Company (the “Board”) will be held on Tuesday, May 20, 2025 (Hong Kong time) for the purpose of, among other things, considering and approving the Company’s unaudited financial results for the three months ended March 31, 2025 (the “Results”) and the publication of the Results.

The Results will be uploaded to the website of The Stock Exchange of Hong Kong Limited at www.hkexnews.hk and the Company’s website at https://ir .hworld.com on Tuesday, May 20, 2025 (Hong Kong time), after the trading hours of The Stock Exchange of Hong Kong Limited and before the opening of the U.S. market.

The Company’s management will host a conference call at 8:00 p.m. (Hong Kong time) on Tuesday, May 20, 2025 (or 8:00 a.m. (U.S. Eastern time) on Tuesday, May 20, 2025) following the announcement of the Results. To join by phone, all participants must pre-register this conference call using the Participant Registration link of https://register-conf.media-server.com/register/ BIa8086f3fd2fa4a3aa928220aab5bc4e3. Upon registration, each participant will receive details for the conference call, including dial-in numbers, conference call passcode and a unique access PIN. A live webcast of the call can be accessed at https://edge.media-server.com/mmc/p/f5fp8ait/ or the Company’s website at https://ir.hworld.com/news-and-events/events-calendar.

A replay of the conference call will be available for twelve months from the date of the conference at the Company’s website, https://ir.hworld.com/news-and-events/events-calendar.

Hong Kong, May 8, 2025

As at the date of this announcement, the Boardof the Company comprises Mr. JI Qi, the Executive Chairman, and Ms. ZHENG Jie, the Executive Director, as directors; Mr. JohnWU Jiong, Ms. ZHAO Tong Tong, Mr. SHANG Jian, Mr. HEE Theng Fong and Ms. CAO Lei as independent directors.