TCS' directly-held subsidiaries include:
- CMC Limited (India)
- WTI Advanced Technology Limited (India)
- APONLINE Limited (India)
- C-Edge Technologies Limited (India)
- MP Online Limited (India)
- Tata America International Corporation (USA)
- Tata Consultancy Services Netherlands BV (Netherlands)
- Tata Consultancy Services Belgium SA (Belgium)
- Tata Consultancy Services Sverige AB (Sweden)
- Tata Consultancy Services Deutschland GmbH (Germany)
- TCS Iberoamerica SA (Uruguay)
- Tata Consultancy Services Asia Pacific Pte Limited (Singapore)
- TCS FNS Pty. Limited (Australia)
- Diligenta Limited (UK)
- Tata Consultancy Services Canada Inc. (Canada)
- Tata Infotech (Singapore) Pte. Limited *(Singapore)
(In Members' Voluntary Liquidation)
- Tata Consultancy Services Morocco SARL AU (Morocco)
- Tata Consultancy Services (Africa) (PTY) Limited (South Africa)
- TCS e-Serve Limited (India)
TCS' indirectly held subsidiaries include:
- CMC Americas Inc (USA)
- TCS Italia SRL (Italy)
- TCS Inversiones Chile Limitada (Chile)
- TCS Solution Center S.A.(Uruguay)
- Tata Consultancy Services Argentina S.A. (Argentina)
- Tata Consultancy Services Do Brasil Ltda (Brazil)
- Tata Consultancy Services De España S.A. (Spain)
- Tata Consultancy Services De Mexico S.A., De C.V. (Mexico)
- Tata Information Technology (Shanghai) Company Limited (China)
- Tata Consultancy Services Malaysia Sdn Bhd (Malaysia)
- Tata Consultancy Services Japan Limited (Japan)
- Tata Consultancy Services Luxembourg S.A (Luxembourg)
- TCS Financial Solutions Australia Holdings Pty Limited (Australia)
- TCS Management Pty Limited (Australia)
- Tata Consultancy Services Switzerland Limited (Switzerland)
- PT Tata Consultancy Services Indonesia (Indonesia)
- Tata Consultancy Services (China) Co., Limited (China)
- Tata Consultancy Services (South Africa) (PTY) Limited (South Africa)
- Tata Consultancy Services (Thailand) Limited (Thailand)
- Tata Consultancy Services (Philippines) Inc. (Philippines)
- TCS e-Serve International Limited (India)
- ERI Holdings Corp (Canada)
- Tata Consultancy Services Chile S.A. (Chile)
- Tata Consultancy Services BPO Chile SA (Chile)
- Tata Consultancy Services Portugal Unipessoal Limitada (Portugal)
- TCS Financial Solutions Australia Pty Limited (Australia)
- PT Financial Network Services (Indonesia)
- Financial Network Services (Africa) (Pty) Limited (South Africa)
- Financial Network Services (H.K.) Limited (Hong Kong)
- Tata Consultancy Services France SAS (France)
- TCS e-Serve America, Inc (USA)
- Exegenix Research Inc.(Canada)
- Financial Network Services Malaysia Sdn Bhd (Malaysia)
- Syscrom S.A. (Chile)
- Custodia De Documentos Interes Limitada (Chile)
- TATASOLUTION CENTER S.A (Ecuador)
- Financial Network Services (Beijing) Co. Limited (China)