Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on Form F-3 of our report dated March 17, 2025 relating to the consolidated financial statements appearing in the Annual Report on Form 20-F of Belite Bio, Inc for the year ended December 31, 2024. We also consent to the reference to our firm under the heading “Experts” in such Registration Statement.

/s/ Marcum Asia CPAs LLP

New York, New York

October 22, 2025

NEW YORK OFFICE • 7 Penn Plaza • Suite 830 • New York, New York • 10001

Phone 646.442.4845 • Fax 646.349.5200 • www.marcumasia.com