Leonard Simon Nimoy (d. 26 Mart 1931 – ö. 27 Şubat 2015), Yahudi asıllı Amerikalı oyuncu, yönetmen, müzisyen ve fotoğrafçıdır. 1966-1969 yılları arasında ABD'de yayınlanan Star Trek dizisinde Spock rolüyle tanındı.
Fringe adlı bilimkurgu dizisinde William Bell isimli bir karakteri canlandırmıştır. 1991 yılında Holokost'tan kurtulan Yahudi Mel Mermelstein'ın hayatını canlandırmıştır.
Uzay Yolu'nun Mr. Spock'u Nimoy solunum yetmezliği nedeniyle 27 Şubat 2015'te 83 yaşında ölmüştür.

Yönetmen olarak

Vincent: Based on the play "Van Gogh" by Phillip Stephens (1978-1981)
Star Trek III: The Search for Spock (1984)
Star Trek IV: The Voyage Home (1986)
Three Men and a Baby (1987)
The Good Mother (1988)
Funny About Love (1990)
Holy Matrimony (1994)
episodes of Night Gallery, T.J. Hooker, The Powers of Matthew Star, and Deadly Games

oyuncu olarak filmleri

Kid Monk Baroni (1951)
Rhubarb (1951)
Zombies of the Stratosphere (1952)
Dragnet (1953 episode "The Big Boys" as Julius Carver)
Them! (1954) (uncredited)
Satan's Satellites (1958)
The Brain Eaters (1958)
Harbor Command (1958 episode - Contraband Diamonds)
The Twilight Zone – "A Quality of Mercy" (1961)
General Hospital (1963)
Perry Mason (1963)
The Outer Limits (1964) "I, Robot" - Judson Ellis
Combat! (1965) Two Episodes
Deathwatch (1966)
The Man From U.N.C.L.E. (1966)
Get Smart (1966)
Star Trek (1966-1969)
Mission: Impossible (1969-1971) The Great Paris
The Alpha Caper (1973) (TV)
Columbo (1973) (TV)
Star Trek: The Animated Series (1973-1974)
In Search of... (1976-1982)
Equus (1977) (Broadway Play) Dr. Martin Dysart
Invasion of the Body Snatchers (1978)
Vincent: Based on the play "Van Gogh" by Phillip Stephens (1978-1981)
Star Trek: The Motion Picture (1979)
A Woman Called Golda (1982) (TV)
Marco Polo (1982) (mini) TV dizisi
Star Trek II: The Wrath of Khan (1982)
Star Trek III: The Search for Spock (1984)
The Sun Also Rises (1984) (mini) TV dizisi
Aladdin and His Wonderful Lamp (Faerie Tale Theatre episode) (1986)
Star Trek IV: The Voyage Home (1986)
Star Trek V: The Final Frontier (1989)
Never Forget (1991) (TV)
Star Trek: The Next Generation – "Unification" (1991) (two-part episode): Ambassador Spock
Star Trek VI: The Undiscovered Country (1991)
Star Trek: 25th Anniversary (computer game) (1992)
Star Trek: Judgment Rites (1993)
The Time Machine (1994) (audio drama) The Time Traveller
The Outer Limits (1995) I, Robot - Thurman Cutler
Brave New World (1998)
Becker (2001)
Uzay Yolu XI (2009)
Fringe (2009)