Jonathan Haze (born April 1, 1929 in Pittsburgh, Pennsylvania) is an American actor. He is best known for his work in Roger Corman films, especially the 1960 black comedy cult classic, The Little Shop of Horrors, in which he played florist's assistant Seymour Krelboyne.
Haze was working at a gas station in California when he was discovered by Wyott Ordung. Ordung was directing the movie Monster from the Ocean Floor (1954), which was being produced by Corman, and offered a small part to Haze. Corman was impressed by Haze, and cast him in many of his films over the next ten years, including Apache Woman (1955), Day the World Ended (1955), Gunslinger (1956), The Oklahoma Woman (1956), It Conquered the World (1956), Swamp Women (1956), Naked Paradise (1957), Not of This Earth (1957), Rock All Night (1957), The Viking Women and the Sea Serpent (1957), Carnival Rock (1957), The Little Shop of Horrors (1960), and The Terror (1963). He also appeared in non-Corman films, such as Bayou (1957), Stakeout on Dope Street (1958), Ghost of the China Sea (1958) and Forbidden Island (1959).
In 1959, Haze guest starred in the episode "Terror Town" of NBC's western television series Cimarron City, starring George Montgomery. Dan Duryea who portrayed the mastermind of a criminal enterprise in silver who is the half-brother of Haze's character.
Haze later branched into other aspects of film making. He wrote the 1962 science fiction/comedy film Invasion of the Star Creatures. He also worked in production for such films as Premature Burial (1962), The Terror (1963), Medium Cool (1969), Another Nice Mess (1972), and Corman's own The Born Losers (1967).