Bradley Barker (January 18, 1883 – September 29, 1951) was an American actor and director of the silent film era. He later created sound effects for film and radio, notably the first voice of Metro-Goldwyn-Mayer's trademark Leo the Lion. He specialized as a mimic of animal sounds on CBS Radio's The March of Time.
Born in Long Island, New York, Barker was a vaudeville performer and an actor in stock theater. He appeared in 70 films between 1915 and 1928. He also directed seven films between 1929 and 1930.
After working in front of the camera, Barker began creating sound effects for radio programs and films. He created the roar of the MGM lion on screen before the studio began using a recording of a real lion, and provided sounds of a variety of animals on radio. Radio programs on which he worked included The March of Time, Let's Pretend and Little Orphan Annie.
On September 29, 1951, Barker died at his home in New York City at age 68.