Exhibit 15.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-257349 and 333-290811) and on Form F-3 (File No. 333-265320) of Tuya Inc. of our report dated April 22, 2026 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 20-F.

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