6-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUERPURSUANT TO RULE 13a-16 OR 15d-16 OF THESECURITIES EXCHANGE ACT OF 1934

For the month of August 2025

Baiya International Group Inc.

(Translation of registrant’s name into English)

Room 18022, Floor 18, 112 W. 34th Street, New York, NY 10120

(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 ☒          Form 40-F ☐

CHANGES IN REGISTRANTS’ CERTIFYING ACCOUNTANT

(a)Dismissal of Certifying Accountant

Baiya International Group Inc. (the “Company” or the “Registrant”) dismissed its independent auditor, Kreit & Chiu CPA LLP (“Kreit & Chiu”), which action was approved by the Company’s Board of Directors on August 1, 2025.

Kreit & Chiu’s audit reports on the Company’s consolidated financial statements for the years ended December 31, 2024 and 2023 did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope, or accounting principles. During the Company’s two most recent fiscal years ended December 31, 2024 and 2023, and the subsequent interim period through August 5, 2025, (i) there were no disagreements (as defined in Item 304(a)(1)(iv) of Regulation S-K) between the Company and Kreit & Chiu on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreements, if not resolved to Kreit & Chiu’s satisfaction, would have caused Kreit & Chiu to make reference to the subject matter of the disagreement in connection with their reports; and (ii) there were no reportable events (as defined in Item 304(a)(1)(v) of Regulation S-K).

(b) Engagement of New CertifyingAccountant

On August 1, 2025, we engaged Onestop Assurance PAC (“Onestop”) as our independent auditors for the fiscal year ended December 31, 2025.

During the two most recent fiscal years and in the subsequent period through the date of this report, we have not consulted with Onestop with respect to the application of accounting principles to a specified transaction, either completed or proposed, or the type of audit opinion that would have been rendered on our consolidated financial statements, or any other matters set forth in Item 304(a)(2)(i) or (ii) of Regulation S-K.

Financial Statements and Exhibits

1

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.

2

Exhibit 16.1

Kreit & Chiu CPA LLP

733 Third Avenue, Floor 16, #1014

New York, NY 10017

(949) 326- 2727

August 8, 2025

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Ladies and Gentleman:

We have read the statements in the Form 6-K dated August 8, 2025, of Baiya International Group Inc. (the “Company”) to be filed with the Securities and Exchange Commission and we agree with such statements therein as related to our firm. We have no basis to, and therefore, do not agree or disagree with the other statements made by the Company in the Form 6-K.

Sincerely,

/s/ Kreit & Chiu CPA LLP

Kreit & Chiu CPA LLP