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

For the monthof August 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 Limitedand The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as toits accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance uponthe whole or any part of the contents of this announcement.

HWorld Group Limited

華住集團有限公司

(Formerly known as HuazhuGroup Limited)

(Incorporated in the CaymanIslands with limited liability)

(Stock Code: 1179)

DATEOF AUDIT COMMITTEE MEETING

AND

2025SECOND QUARTER AND INTERIM FINANCIAL RESULTS

ANNOUNCEMENTDATE

AND

DATEOF BOARD RESOLUTION IN RELATION TO CASH DIVIDEND

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 Wednesday, August 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 and six months ended June 30, 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 Wednesday, August 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 Wednesday, August 20, 2025 (or 8:00 a.m. (U.S. Eastern time) on Wednesday, August 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/BI43be1b1c38d54616b79b4ac227dd1612. 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/vht2kbe3 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.

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The Company further announces that the Board is considering the declaration and payment of a dividend in cash. If the Board decides to proceed, the declaration of dividend will be adopted by Board resolution on or around Wednesday, August 20, 2025 (Hong Kong time).

Hong Kong, August 8, 2025

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

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