The Adventures of Frontier Fremont, released in the UK as Spirit of the Wild, is a 1976 American Western adventure film directed by Richard Friedenberg, starring Dan Haggerty and Denver Pyle.

The Adventures of Frontier Fremont, a family based movie, tells the story of Jacob "Frontier" Fremont. Fremont, originally from St. Louis, gives up his job as a tinsmith in favor of a life as a mountain man. In the mountains he befriends and protects many local animals. Denver Pyle co-stars as "the old mountaineer". Three of the stars, Dan Haggerty, Denver Pyle and Don Shanks, also appeared together in the TV series "The Life And Times Of Grizzly Adams".