John Larch (October 4, 1914 - October 16, 2005) was an American film and television actor.

Entering films in 1954, Larch usually appeared in westerns and action films, including the Matt Helm movie The Wrecking Crew (1969) starring Dean Martin and Elke Sommer. Larch, an old friend of Clint Eastwood, appeared in Eastwood films including Dirty Harry (1971) and Play Misty for Me (1972). He also appeared on a number of television programs, possibly most famously as Billy Mumy's father in The Twilight Zone episode "It's a Good Life" in 1961.

Buried at Mt. Sinai Memorial Park 5950 Forest Lawn Drive, Los Angeles, California. Borders the city of Glendale and Forest Lawn Hollywood Hills Memorial Park.