Budweiser () is an American-style pale lager, a brand of Belgian company AB InBev. Introduced in 1876 by Carl Conrad & Co. of St. Louis, Missouri, Budweiser is one of the largest selling beers in the United States. Budweiser is a filtered beer, available on draft and in bottles and cans, made with up to 30% rice in addition to hops and barley malt.

There is an ongoing series of trademark disputes between Anheuser-Busch and the Czech company Budweiser Budvar Brewery over the use of the name. Usually, either Anheuser-Busch or Budweiser Budvar is granted the exclusive use of the Budweiser name in a given market. The Anheuser-Busch lager is available in over 80 countries, but is marketed as "Bud" in areas where Budvar has use of the Budweiser name.