Isaac "Ike" Berger (born November 16, 1936, in Jerusalem) was an Olympicweightlifter for the United States. He is the holder of 23 world weightlifting records, and won the national title in the United States twelve times.
He was the first featherweight in history to lift more than 800 pounds (360 kg), and the first to press double his body weight. He won the featherweight championship of the United States seven times, and the world championship twice. He twice won the featherweight title at the Pan American Games.