Big Twin may refer to: a two-patty hamburger with a unique sauce, was originally one of Hardee's signature menu items Big Twin Sauce, a condiment used on hamburgers at Hardee's Big Twin Lake, a lake in Martin County, Minnesota a motorcycle from an American manufacturer with the larger of two V-twin engines made by the manufacturer Harley-Davidson motorcycle with an engine capacity of 74 cu. in or greater (not including the 1200 cc Sportster from the early 1980s onward) Indian Chief motorcycle Big Twin (video game), a Japanese adult arcade game from 1995