Colt 45 is a brand of beer (or malt liquor) introduced by National Brewing Company in the spring of 1963. Through a series of mergers and acquisitions, the National Brewing Company and its brands (including Colt 45) are today owned by the Pabst Brewing Company.

Colt 45 is available today in a multitude of packages and sizes. Cans are available in 12, 16 and 24 ounce packages and bottles are available in 12, 16, 18, 22, 32 and 40 ounce packages. Cans are available in multi-packs including: 12, 15, 18, 24, 30 packs of 12 ounce cans.