Buddy Roosevelt (June 25, 1898-October 6, 1973) was an American film actor and stunt performer from Hollywood's early silent film years through the 1950's.

Roosevelt was born Kenneth Stanhope Sanderson in Meeker, Colorado, and was athletic and a cowboy in his youth. He started performing as a stuntman in 1916, his first work being on the film Hell's Hinges. He would continue working as a stuntman as well as an actor throughout his long Hollywood career. Roosevelt served in the US Navy during World War I. Although it has been said that he served aboard the USS Norfolk, and that it was sank during that war, no record of a USS Norfolk being in service during World War I has been found.

Following the end of World War I, he returned to Hollywood, performing stunts in films as notable as The Sheik, the 1921 movie classic starring Rudolph Valentino, and for which Valentino would become most remembered. Roosevelt's first acting role was in the 1924 film Down in Texas. He would star in thirty seven films from 1924 to 1929, most of which were western films, and would make a successful transition to "talking films", much due to his abilities as a stunt performer.

In 1930 he appeared alongside William Haines and Leila Hyams in Way Out West, which continued him on the path of western film roles, mostly in B-movies. During the 1930's he appeared in sixty six films, including some combined acting and stunt work, almost all being westerns, appearing with such notable actors and actresses as Harry Carey, Hoot Gibson, Gloria Stuart, Joel McCrea, Edward G. Robinson, Bette Davis and Humphrey Bogart. In 1939 he both performed stunts and had a minor role in the Claire Trevor-John Wayne classic Stagecoach, and in 1940 he appeared, uncredited, again with John Wayne in The Man from Dakota, in which he also performed stunts. Throughout the 1940's he both appeared in or performed stunts in thirty two films, most notably alongside Randolph Scott and Lloyd Bridges in Abilene Town.

From 1950 through 1962 he would appear in or perform stunts in thirty six films and two television series episodes. He would retire after 1962, with his last appearance being uncredited in the John Wayne and Jimmy Stewart film The Man Who Shot Liberty Valance. He returned home to Meeker, Colorado, where he was living at the time of his death on October 6th, 1973.

Roosevelt was originally cast as The Cisco Kid in In Old Arizona (1928), but he broke his leg shortly before shooting was to start. He was replaced by Warner Baxter, who went on to win an Academy Award. A few years later Roosevelt was approached by producer Paul Malvern about starring in a series of low-budget westerns for Monogram. Apparently, however, Roosevelt's wife went behind his back and demanded more money than Malvern was willing to pay. Angered, Malvern turned instead to a young actor named John Wayne (I), who snapped up the offer. That string of Monogram "B" westerns started Wayne on the road to superstardom. Roosevelt continued grinding out low-rent westerns with steadily decreasing budgets, and finished up his career doing unbilled bit parts and stuntwork.

Roosevelt served in the US Navy during World War I, and was aboard the USS Norfolk when it sunk.