**Exhibit 21**

**WATSON WYATT WORLDWIDE,INC.**

**SUBSIDIARIES**

**(10-2-06)**
| ** **                                            | **SUBSIDIARY NAME** | ** **      | ** ** | **JURISDICTION OF INCORPORATION/  ORGANIZATION** | ** ** | **Name(s) under which  such subsidiary does business  (if different)(a)** |
|-------------------------------------------------------|---------------------|-----------------|------------|--------------------------------------------------|------------|---------------------------------------------------------------------------|
|                                                  |                |            |       |                                             |
| Watson Wyatt Argentina  S.A.                          |                | Argentina       |       |                                             |
| Watson Wyatt Australia  Pty Ltd                       |                | Australia       |       |                                             |
| Wycomp Pty Ltd                                        |                | Australia       |       |                                             |
| Watson Wyatt  Superannuation Pty Ltd                  |                | Australia       |       |                                             |
| Watson Wyatt S.A.                                     |                | Belgium         |       |                                             |
| Watson Wyatt Insurance  & Financial Services SA   |                | Belgium         |       |                                             |
| Watson Wyatt Brasil  Ltda.                            |                | Brazil          |       |                                             |
| Watson Wyatt Canada ULC                               |                | Canada, Alberta |       |                                             |
| Watson Wyatt Chile S.A.                               |                | Chile           |       |                                             |
| Corredores de Seguros  Watson Wyatt Limitada          |                | Chile           |       |                                             |
| Watson Wyatt  Consultancy (Shanghai) Ltd.             |                | China           |       |                                             |
| Watson Wyatt  Consultancy (Shenzhen) Ltd.             |                | China           |       |                                             |
| Watson Wyatt Hong Kong  Limited                       |                | China           |       |                                             |
| Watson Wyatt Insurance  Consulting Ltd.               |                | China           |       |                                             |
| Watson Wyatt Investment  Consulting Hong Kong Limited |                | China           |       |                                             |
| Watson Wyatt  Consultores Colombia S.A.               |                | Colombia        |       |                                             |
| Watson Wyatt S.A.R.L.                                 |                | France          |       |                                             |
| Watson Wyatt GmbH                                     |                | Germany         |       |                                             |
| Watson Wyatt  Deutschland GmbH                        |                | Germany         |       |                                             |
| Watson Wyatt Insurance  Consulting GmbH               |                | Germany         |       |                                             |
| Watson Wyatt Kft                                      |                | Hungary         |       |                                             |
| Watson Wyatt (Ireland)  Limited                       |                | Ireland         |       |                                             |
| Watson Wyatt India  Private Limited                   |                | India           |       |                                             |
| Watson Wyatt Insurance  Consulting Private Ltd        |                | India           |       |                                             |
| P.T. Watson Wyatt Purbajaga                           |                | Indonesia       |       |                                             |
| P.T. Watson Wyatt  Indonesia                          |                | Indonesia       |       |                                             |
| Watson Wyatt Italia  s.r.l.                           |                | Italy           |       |                                             |
| Watson Wyatt K.K.                                     |                | Japan           |       |                                             |
| Watson Wyatt Insurance  Consulting KK                 |                | Japan           |       |                                             |
| Watson Wyatt Insurance  Consulting (Korea) Limited    |                | Korea           |       |                                             |
| Watson Wyatt (Malaysia)  Sdn. Bhd.                    |                | Malaysia        |       |                                             |
| Watson Wyatt Holdings  (Mauritius) Limited            |                | Mauritius       |       |                                             |
| Watson Wyatt Mexico,  S.A. de C.V.                    |                | Mexico          |       |                                             |
| Watson Wyatt B.V.                                     |                | Netherlands     |       |                                             |
| Watson Wyatt European  Region B.V.                    |                | Netherlands     |       |                                             |
| Watson Wyatt Insurance  Consulting BV                 |                | Netherlands     |       |                                             |
| Watson Wyatt  Philippines, Inc.                       |                | Philippines     |       |                                             |
| Watson Wyatt Puerto  Rico, Inc.                       |                | Puerto Rico     |       |                                             |
| Watson Wyatt Singapore  Pte. Ltd.                     |                | Singapore       |       |                                             |
| Watson Wyatt Insurance  Consulting Pte Ltd            |                | Singapore       |       |                                             |
| Watson Wyatt de España, S.A.                     |                | Spain           |       |                                             |

 

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| Watson Wyatt Insurance Consulting (Spain) SA                                 |   | Spain         |   |   |
|------------------------------------------------------------------------------|--------|---------------|--------|--------|
| Watson Wyatt A.B.                                                            |   | Sweden        |   |   |
| Watson Wyatt AG                                                              |   | Switzerland   |   |   |
| Watson Wyatt (Thailand) Ltd.                                                 |   | Thailand      |   |   |
| Watson Wyatt Uruguay S.A.                                                    |   | Uruguay       |   |   |
| Wyatt Trustee Limited                                                        |   | U.K.          |   |   |
| PCL (1991) Limited                                                           |   | U.K.          |   |   |
| PCL Limited                                                                  |   | U.K.          |   |   |
| The Wyatt Company (UK) Limited                                               |   | U.K.          |   |   |
| The Wyatt Company Holdings Limited                                           |   | U.K.          |   |   |
| Watson Wyatt Holdings Limited                                                |   | U.K.          |   |   |
| Watson Wyatt Holdings (Europe) Limited                                       |   | U.K.          |   |   |
| Watson Wyatt International Limited                                           |   | U.K.          |   |   |
| Wyatt Financial Services Limited                                             |   | U.K.          |   |   |
| Wyatt Pension Plan Trustee Limited                                           |   | U.K.          |   |   |
| Watson Wyatt European Region Limited                                         |   | U.K.          |   |   |
| Watson Wyatt Limited                                                         |   | U.K.          |   |   |
| Watson Wyatt (UK) Acquisitions 1 Limited                                     |   | U.K.          |   |   |
| Watson Wyatt (UK) Acquisitions 2 Limited                                     |   | U.K.          |   |   |
| Watson Wyatt European Investment LP                                          |   | U.K.          |   |   |
| Watson Wyatt European Investment Holdings Limited                            |   | U.K.          |   |   |
| Watson Wyatt Insurance & Financial Services  Consulting Holdings Limited |   | U.K.          |   |   |
| Watson Wyatt Trustees Limited                                                |   | U.K.          |   |   |
| Watsons International Limited                                                |   | U.K.          |   |   |
| RWS Trustee Limited                                                          |   | U.K.          |   |   |
| Watson Wyatt Pretium Limited                                                 |   | U.K.          |   |   |
| Watson’s Pensioneer Trustees Limited                                    |   | U.K.          |   |   |
| Watson Wyatt Services Limited                                                |   | U.K.          |   |   |
| Watson Wyatt & Company                                                   |   | U.S. Delaware |   |   |
| Watson Wyatt Insurance Consulting, Inc.                                      |   | U.S. Delaware |   |   |
| Watson Wyatt Canadian Holdings, Inc.                                         |   | U.S. Delaware |   |   |
| Watson Wyatt Investment Consulting, Inc.                                     |   | U.S. Delaware |   |   |
| Wyatt Data Services, Inc.                                                    |   | U.S. Delaware |   |   |
| Watson Wyatt European Investment Holdings, Inc.                              |   | U.S. Delaware |   |   |
| Watson Wyatt European Investment Holdings 1, LLC                             |   | U.S. Delaware |   |   |
| Watson Wyatt European Investment Holdings 2, LLC                             |   | U.S. Delaware |   |   |
| Watson Wyatt Insurance & Financial Services Inc.                         |   | U.S. Delaware |   |   |
| Watson Wyatt International, Inc.                                             |   | U.S. Nevada   |   |   |

 

(a)All of thesesubsidiaries do business under their own name or under the name Watson WyattWorldwide.

 

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