The Cheyenne Frontier Days Old West Museum is located in Cheyenne, Wyoming, USA. The museum was founded in 1978. It is a 501(c)(3) non-profit organization, dedicated to interpreting, conserving and exhibiting the history and material culture of Cheyenne, Cheyenne Frontier Days, the State of Wyoming and the American West. The museum features the Cheyenne Frontier Days Hall of Fame. Permanent exhibits include Western horse-drawn carriages and wagons, the history and memorabilia of Cheyenne Frontier Days rodeo celebration, local history of Cheyenne, pioneer artifacts and clothing, and Western and folk art.
Former museum director Shirley E. Flynn (1987-1991), penned the history of the Frontier Days celebration in her 1996 book Let's Go! Let's Show! Let's Rodeo! The History of Cheyenne Frontier Days.