|This article does not cite any sources. (August 2010) (Learn how and when to remove this template message)|
Jay Kirby (January 28, 1920 – July 30, 1964) was an American actor in films and television. He was best known for playing Johnny Travers, the youthful sidekick of Hopalong Cassidy in six films in the 1940s.
Kirby was born William B. George in Missouri. He began acting in films in 1942, when he was cast to replace Russell Hayden as the boyish partner to cowboy hero Hopalong Cassidy. He was an aviation cadet in the U.S. Army Air Forces during World War II but does not appear to have served long, as his screen appearances are continuous throughout the war and afterward for several years. In 1949 he reverted to his real name, Bill George, for his last feature film and his subsequent television roles. He died at 44 and was buried in the Los Angeles National Cemetery.