Gimlet is an unincorporated community in Blaine County in the U.S. state of Idaho. Gimlet is located in the Wood River Valley along State Highway 75 with Ketchum 5 mi (8 km) north and Hailey 6 mi (9.7 km) south of the community. Gimlet also has the only accessible road to the community of Triumph located 5 mi (8 km) northeast. The Big Wood River flows through Gimlet where it is joined by the East Fork Wood River flowing down from Triumph.