Exhibit 8.1
List of subsidiary companies
At 31 December 2022
The principal operating subsidiary companies of the Rio Tinto Group are listed in Note 30 to the 2022 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 | AUD Ordinary shares | 100 | 100 | ||||||||||
North IOC Holdings Pty Ltd | Holding company | AUD Ordinary shares | 100 | 100 | ||||||||||
North Limited | Holding company | AUD Ordinary shares | 100 | 100 | ||||||||||
Pacific Aluminium Pty. Limited | Holding company | AUD Ordinary shares | 100 | 100 | ||||||||||
Peko-Wallsend Pty Ltd | Holding company | AUD Ordinary shares | 100 | 100 | ||||||||||
Rio Tinto Finance Limited | Finance company | AUD Ordinary shares | 100 | 100 | ||||||||||
Rio Tinto Finance (USA) Limited | Finance company | AUD Ordinary shares | 100 | 100 | ||||||||||
Rio Tinto Investments One Pty Limited | Holding company | AUD Ordinary shares | 100 | 100 | ||||||||||
Rio Tinto Investments Two Pty Limited | Holding company | AUD Ordinary shares | 100 | 100 | ||||||||||
Robe River Limited | Holding company | AUD 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 | ||||||||||||||
46117 Yukon Inc. | Holding company | CAD Common shares | 100 | 100 | ||||||||||
CAD Preferred shares | 100 | 100 | ||||||||||||
535630 Yukon Inc. | Holding company | CAD Common shares | 100 | 100 | ||||||||||
CAD Preferred shares | 100 | 100 | ||||||||||||
Rio Tinto THR Inc. | Holding company | CAD Common shares | 100 | 100 | ||||||||||
Rio Tinto Canada Inc | Holding company | CAD Class B shares | 100 | 100 | ||||||||||
CAD Class C shares | 100 | 100 | ||||||||||||
CAD Class D shares | 100 | 100 | ||||||||||||
CAD Class J shares | 100 | 100 | ||||||||||||
CAD Class S shares | 100 | 100 | ||||||||||||
Netherlands | ||||||||||||||
Rio Tinto Eastern Investments B.V. | Holding company | €12,510,234,217.00 Ordinary shares | 100 | 100 | ||||||||||
South Africa | ||||||||||||||
Richards Bay Mining Holdings (Proprietary) Limited | Holding company | ZAR1.00 A 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 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 | ||||||||||
Rio Tinto Simfer UK Limited | Holding company | US$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 |
Company and country of incorporation | Principal activities | Class of shares held | Proportion of class held | Group interest | ||||||||||
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 |