As of July 2026 Diageo has a market cap of A$67.12 Billion. This makes Diageo the world's 529th 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 Jul 20th, 2026 the market cap of Diageo was reported to be: