Tom London (August 24, 1889 - December 5, 1963) was an American actor who, by some counts, is credited with appearing in the most movies in the history of Hollywood. Born Leonard Clapham in Louisville, Kentucky, he got his start in movies as a props man in Chicago, Illinois.

His debut was in 1915 in the Western Lone Larry, performing under his own name. In 1925, after having appeared in many silent films, he changed his name to Tom London, and used that name for the rest of his career. The first film in which he was billed under his new name was Winds of Chance, a World War I film, in which he played "Sgt. Rock".

London was a trick rider and roper, and used his trick skills in scores of Westerns. He appeared as the sidekick to Western star Sunset Carson in several films.

London is credited in several prints of The Great Train Robbery, but since he was only 14 years old when that movie was filmed in 1903, it's unlikely that he actually appeared in it.

London made many guest appearances in television shows through the 1950s. His last movie was Underworld U.S.A. in 1961.

He died in North Hollywood and was interred in the Forest Lawn Memorial Park Cemetery in Glendale, California.

A character actor and veteran of hundreds of Hollywood westerns, Tom London seemed to be born in the saddle. As a trick rider he performed riding specialties in a number of films. His career started in the teens and through the 1920s he alternated between good guy and bad. He made appearances in non-westerns such as All Quiet on the Western Front (1930) and Platinum Blonde (1931), but westerns were his mainstay. When the "B" western disappeared in the mid-'50s, so did his career. He appeared in only a handful of film for the rest of the decade.

Grizzled character actor of scores of Westerns. A native of Kentucky, he spent his early manhood as a salesman. He obtained work with the Selig film company in Chicago as a property man and came to California when that firm moved west. He began to get small parts in the Westerns Selig produced and both his expertise with horses and his rugged appearance soon led him to larger roles. In 1924, he adopted the stage name Tom London after years of performing under his real name. He played heavies and comical roles with equal skill and became, throughout the Thirties and Forties, a familiar face low-budget pictures. He played the comic sidekick to Western star Sunset Carson in a number of b-Westerns and continued to play character roles until his death.