Exhibit 15.3

Thanathip Pichedvanichok

D: (66) 2089 8989

E: thanathip@thanathippartners.com

Our Ref: TDC01/M22058 TPID-15-114956

19 April 2022

TDCX Inc. 750D Chai Chee Road #06-01/06 Viva Business Park Singapore 469004 By Courier Private & Confidential

Attention: Mr. Edward Goh / Ms. Meera Karmakar

Dear Sirs,

We hereby consent to the references to our name in the annual report on Form 20-F for the year ended 31 December 2021 of TDCX Inc. with the U.S. Securities and Exchange Commission and any Registration Statements filed on Form S-8 which may incorporate by reference and to the filing of this letter as an exhibit to such report. In giving such consent, we do not thereby admit that we come within the category of persons whose consent is required under Section 7 of the U.S. Securities Act of 1933, as amended, or the rules and regulations of the U.S. Securities and Exchange Commission thereunder.

Your faithfully

/s/ Thanathip & Partners Legal Counsellors Limited

Thanathip & Partners Legal Counsellors Limited

17^th Floor, Tonson Tower

900 Ploenchit Road, Lumpini, Pathumwan, Bangkok 10330

T. (66) 2089 8902