Jack Silver (August 16, 1903 – July 26, 1994) was a Navy Pacific Fleet Champion around 1921, a Pacific Coast Lightweight boxing Champion in 1924 and a contender for the Pacific Coast Welterweight Championship in 1926.
In 1925, he was the World's third ranked lightweight.
He was reputed by one source to have fought 237 bouts with 200 wins.
In his career he fought champions Mushy Callahan, Young Corbett III, Jackie Fields, and Young Jack Thompson.
He defeated Callahan in a stunning upset on July 5, 1926 just months before Callahan would take the World Light Welterweight Championship.
After his retirement from professional boxing, he was a California boxing referee and judge for over twenty years.