Kenneth Milton Grimwood (born February 27 1944 - died June 6 2003) was an American author of fantasy fiction.
Winner of the 1988 World Fantasy Award for his novel Replay, Grimwood's fiction was characterized by its themes of life-affirmation and hope. Other novels included Breakthrough (1976), Elise (1979), The Voice Outside (1982), and Into the Deep (1995). Grimwood died of a heart attack in his home in Santa Barbara, California.