As of December 2025 Rio Tinto has a market cap of โน11.246 Trillion. This makes Rio Tinto the world's 163th 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 Dec 10th, 2025 the market cap of Rio Tinto was reported to be: