As of April 2025 Rio Tinto has a market cap of C$133.92 Billion. This makes Rio Tinto the world's 173th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Apr 22nd, 2025 the market cap of Rio Tinto was reported to be: