John Zaremba (October 22, 1908 – December 15, 1986) was an American actor most noted for supporting roles on science fiction films and television series.

[1] The Chicago-born Zaremba was a journalist for the Grand Rapids Press and Chicago Tribune newspapers until 1949, when he moved to Hollywood and became an actor.

In 1962, he appeared as "Stone" on The Virginian in the episode, "It tolls for Thee".

His regular roles included Dr. Harold Jansen in Ben Casey (1961–1966), Dr. Raymond Swain in The Time Tunnel (1966–1967), and a judge in Owen Marshall: Counselor at Law (1971–1974).

[2] While first appearing as a Captain Martin in a 1963 episode ("A Letter for Fuji") of McHale's Navy, he would make four more recurring appearances in subsequent episodes in 1964 and 1965, all as Admiral Hardesty.