Frank Gerstle (born 1915, died 1970) was an American actor. He had a long and varied career in films and television, as well as voice-over.
- He was sometimes credited as "Frank Gerstel", "Frank Gustle", or "William Gerstle".
- Frank Gerstle played the role of "Influence" in the 1950s Dick Tracy live-action TV series starring Ralph Byrd (see also Wyott Ordung).
- The Atomic Brain (also known as Monstrosity) (Experiment #518) - as Dr. Frank
- San Francisco International (Experiment #614) - as Congressman
- The Wasp Woman (Cinematic Titanic & Attack of the Killer B Movies) - as Les Hellman
- Killers From Space (The Film Crew & Attack of the Killer B Movies) - as Dr. Kruger