Peter Marko (born 17 February 1934; age 90) is the actor who played Gaetano in the Star Trek: The Original Series first season episode "The Galileo Seven".
Marko had been active from the early 1960s to the late 1970s. Most of his known acting credits are guest appearances on television shows such as The Outer Limits (with Rudy Solari, Robert DoQui, and the voice of Vic Perrin, directed by Byron Haskin and written by Jerry Sohl), 12 O'Clock High (starring Frank Overton, one episode with William Shatner and Adam Roarke, directed by Robert Gist, another with Jill Ireland, Seymour Cassel, and William Sargent, and another directed by Joseph Pevney), The Fugitive (with Ted Knight, Robert DoQui, directed by Robert Gist and another episode with Antoinette Bower, Dallas Mitchell, and Bill Erwin, written and directed by John Meredyth Lucas), Hogan's Heroes (with James Gregory), and Mission: Impossible (with Robert Hitchcock, Shep Houghton, and the voice of Robert C. Johnson, directed by Robert Gist).
He also appeared in an uncredited role in the 1966 film An American Dream, featuring Susan Denberg, Warren Stevens, George Takei, Richard Derr, and Tony Young, and again directed by Robert Gist, and had a role in the 1977 adult movie The Capitol Hill Girls, also known as Political Pleasures.