Exhibit 8.1

SUBSIDIARY DIRECTORY OF SUMITOMO MITSUI TRUST HOLDINGS, INC.

The
following table sets forth certain basic information for each of our principal consolidated subsidiaries and equity method affiliates as of June 30, 2011.



|                                                     |  |                              |  |                     |        |  
|---------------------------------------------------- |  | ---------------------------- |  | ------------------- | ------ | -
|Name                                                 |  | Jurisdiction ofIncorporation |  | Equity Ownership(%) |       
|The Sumitomo Trust and Banking Company, Limited      |  | Japan                        |  |                     | 100.00 | %
|The Chuo Mitsui Trust and Banking Company, Limited   |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Asset Trust and Banking Company, Limited |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Asset Management Company, Limited        |  | Japan                        |  |                     | 100.00 | %
|STB Asset Management Co., Ltd.                       |  | Japan                        |  |                     | 100.00 | %
|Nikko Asset Management Co., Ltd.                     |  | Japan                        |  |                     | 98.60  | %
|Chuo Mitsui Capital Company Limited                  |  | Japan                        |  |                     | 100.00 | %
|STB Investment Corporation                           |  | Japan                        |  |                     | 100.00 | %
|STB Real Estate Investment Management Co., Ltd.      |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Trust Realty Company, Limited            |  | Japan                        |  |                     | 100.00 | %
|Top REIT Asset Management Co., Ltd.                  |  | Japan                        |  |                     | 38.00  | %
|Mitsui & Co., Logistics Partners Ltd.                |  | Japan                        |  |                     | 29.00  | %
|Japan Trustee Services Bank, Ltd.                    |  | Japan                        |  |                     | 66.67  | %
|STB Research Institute Co., Ltd.                     |  | Japan                        |  |                     | 100.00 | %
|Sumishin Realty Company Limited                      |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Realty Company Limited                   |  | Japan                        |  |                     | 55.00  | %
|Tokyo Securities Transfer Agent Co., Ltd.            |  | Japan                        |  |                     | 100.00 | %
|Japan TA Solution, Ltd.                              |  | Japan                        |  |                     | 80.00  | %
|Japan Stockholders Data Service Company, Limited     |  | Japan                        |  |                     | 50.00  | %
|Japan Pension Operation Service, Ltd.                |  | Japan                        |  |                     | 50.00  | %
|Sumishin Real Estate Loan & Finance, Ltd.            |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Finance Service Co., Ltd.                |  | Japan                        |  |                     | 100.00 | %
|BUSINEXT CORPORATION                                 |  | Japan                        |  |                     | 40.00  | %
|Sumishin Card Company, Limited                       |  | Japan                        |  |                     | 95.00  | %
|Chuo Mitsui Card Co., Ltd.                           |  | Japan                        |  |                     | 93.99  | %
|Sumishin Life Card Company, Limited                  |  | Japan                        |  |                     | 40.00  | %
|Sumishin Panasonic Financial Services Co., Ltd.      |  | Japan                        |  |                     | 84.89  | %
|STB Wealth Partners Co., Limited                     |  | Japan                        |  |                     | 100.00 | %
|SBI Sumishin Net Bank, Ltd.                          |  | Japan                        |  |                     | 50.00  | %
|Chuo Mitsui Information Technology Co., Ltd.         |  | Japan                        |  |                     | 100.00 | %
|Suimishin Information Service Company Limited        |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Guarantee Co., Ltd.                      |  | Japan                        |  |                     | 100.00 | %
|Sumishin Guarantee Company, Limited                  |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Business Co., Ltd.                       |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Loan Business Company, Limited           |  | Japan                        |  |                     | 100.00 | %
|STB Business Service Company, Limited                |  | Japan                        |  |                     | 100.00 | %
|Chuo Mitsui Create Company, Limited                  |  | Japan                        |  |                     | 100.00 | %
|HR One Corporation                                   |  | Japan                        |  |                     | 35.89  | %
|STB Business Partners Co., Ltd.                      |  | Japan                        |  |                     | 100.00 | %
|CMTB Facilities Company, Limited                     |  | Japan                        |  |                     | 100.00 | %
|The Sumishin Shinko Company Limited                  |  | Japan                        |  |                     | 100.00 | %
|CMTB Equity Investments Co., Ltd.                    |  | Japan                        |  |                     | 100.00 | %
|Sumitomo Trust and Banking Co. (U.S.A.)              |  | United States                |  |                     | 100.00 | %
|Sumitomo Trust and Banking (Luxembourg) S.A.         |  | Luxembourg                   |  |                     | 100.00 | %
|Chuo Mitsui Trust International Limited              |  | United Kingdom               |  |                     | 100.00 | %
|The Sumitomo Trust Finance (H.K.) Ltd.               |  | China                        |  |                     | 100.00 | %
|Chuo Mitsui Investments Hong Kong Ltd.               |  | China                        |  |                     | 100.00 | %
|STB Consulting (China) Co., Ltd.                     |  | China                        |  |                     | 100.00 | %
|Zijin Trust Co., Ltd.                                |  | China                        |  |                     | 19.99  | %
|Rongtong Fund Management Co., Ltd.                   |  | China                        |  |                     | 40.00  | %



8.1-1