EX-8.1 6 ex08-1subsidiaries2024.htm EX-8.1
Exhibit 8.1
List of subsidiary companies
At 31 December 2024
The principal operating subsidiary companies of the Rio Tinto Group are listed in Note 30 to the 2024 Financial statements. The principal intermediate holding companies and group finance companies are as follows:

Company and country of incorporation | Principal activities | Class of shares held | Proportion of class held | Group interest
|  |  | % | %
Australia |  |  |  |
Hamersley Holdings Limited | Holding company | A$ Ordinary shares | 100 | 100
North IOC Holdings Pty Ltd | Holding company | A$ Ordinary shares | 100 | 100
North Limited | Holding company | A$ Ordinary shares | 100 | 100
Pacific Aluminium Pty. Limited | Holding company | A$ Ordinary shares | 100 | 100
Peko-Wallsend Pty Ltd | Holding company | A$ Ordinary shares | 100 | 100
Rio Tinto Finance Limited | Finance company | A$ Ordinary shares | 100 | 100
Rio Tinto Finance (USA) Limited | Finance company | A$ Ordinary shares | 100 | 100
Rio Tinto Investments One Pty Limited | Holding company | A$ Ordinary shares | 100 | 100
Rio Tinto Investments Two Pty Limited | Holding company | A$ Ordinary shares | 100 | 100
RTA Pacific Pty Limited | Holding company | A$ Ordinary shares | 100 | 100
Robe River Limited | Holding company | A$ Ordinary shares | 100 | 100
Bermuda |  |  |  |
North IOC (Bermuda) Holdings Limited | Holding company | US$1.00 Ordinary shares | 100 | 100
North IOC (Bermuda) Limited | Holding company | US$1.00 Ordinary shares | 100 | 100
|  | US$100,000.00 Preferred shares | 100 | 100
| US$143.64 Class A Ordinary shares | 100 | 100
QIT Madagascar Minerals Ltd. | Holding company | US$1.00 Ordinary shares | 100 | 100
Canada |  |  |  |
Rio Tinto Canada Inc. | Holding company | CA$ Class B shares | 100 | 100
|  | CA$ Class C shares | 100 | 100
|  | CA$ Class D shares | 100 | 100
|  | CA$ Class J shares | 100 | 100
|  | CA$ Class S shares | 100 | 100
Netherlands |  |  |  |
Oyu Tolgoi Netherlands BV | Holding company | €100 Ordinary shares | 100 | 100
Rio Tinto Eastern Investments B.V. | Holding company | US$12,510,234,217 Ordinary shares | 100 | 100
New Zealand |  |  |  |
Pacific Aluminium (New Zealand) Limited | Holding company | NZ Ordinary | 100 | 100
South Africa |  |  |  |
Richards Bay Mining Holdings (Proprietary) Limited | Holding company | ZAR1.00 Ordinary shares | 100 | 100
|  | ZAR1.00 B Ordinary shares | 100 | 100
Richards Bay Titanium Holdings (Proprietary) Limited | Holding company | ZAR1.00 A Ordinary shares | 100 | 100
|  | ZAR1.00 B Ordinary shares | 100 | 100
United Kingdom |  |  |  |
Rio Tinto Copper Holdings Limited | Holding company | US$1.00 Ordinary shares | 100 | 100
|  | US$1.00 Preference shares | 100 | 100
Rio Tinto Copper Limited | Holding company | US$1.00 Ordinary shares | 100 | 100
Rio Tinto European Holdings Limited | Holding company | £1.00 Ordinary shares | 100 | 100
Rio Tinto Finance plc | Finance company | £1.00 Ordinary shares | 100 | 100
|  | US$1.00 Ordinary shares | 100 | 100
Rio Tinto Finance (USA) plc | Finance company | £1.00 Ordinary shares | 100 | 100
Rio Tinto International Holdings Limited | Holding company | £1.00 Ordinary shares | 100 | 100

Company and country of incorporation | Principal activities | Class of shares held | Proportion of class held | Group interest
Rio Tinto Minerals Limited | Holding company | US$1.00 Ordinary shares | 100 | 100
|  | £1.00 Ordinary shares |  |
Rio Tinto Simfer UK Limited | Holding company | US$1.00 Ordinary shares | 100 | 100
Rio Tinto Western Holdings Limited | Holding company | £1.00 Ordinary shares | 100 | 100
United States of America |  |  |  |
Rio Tinto America Holdings Inc. | Holding company | US$0.01 Class A Common shares | 100 | 100
|  | US$100.00 Series A Preferred Stock | 100 | 100
Rio Tinto America Inc. | Holding company | US$100.00 Common shares | 100 | 100
Rio Tinto Finance (USA) Inc. | Holding company | US$1.00 Common shares | 100 | 100
Rio Tinto Minerals Inc. | Holding company | US$0.01 Common shares | 100 | 100
Rio Tinto Technology Holdings Corporation | Holding company | US$1,000 Common shares | 100 | 100