John Zaremba (October 22, 1908 – December 15, 1986) was an American actor most noted for supporting roles on science fiction films and TV series. In 1966 he was a regular cast member in the Irwin Allen science fiction series The Time Tunnel for ABC-TV.

He was born in Chicago, Illinois. Before his acting career, he was a journalist for the Grand Rapids Press and Chicago Tribune newspapers until 1949, when he moved to Hollywood. He died in Newport Beach, California.