(archive footage)
Star Trek: Inside the Roddenberry Vault (2016)
Leonard McCoy (archive footage)
The Pixar Story (2007)
Self
40 Years of Star Trek (2006)
Viking 1 (voice)
The Brave Little Toaster Goes to Mars (1998)
Trekkies (1997)
The Making of Star Trek Deep Space Nine Trials And Tribble-ations (1996)
William Shatner's Star Trek Memories (1995)
William Shatner: Captain's Log (1994)
Himself
Star Trek: A Captain's Log (1994)
A Conversation with DeForest Kelley (1993)
Dr. Leonard 'Bones' McCoy
Star Trek VI: Aquell país desconegut (1991)
Star Trek: 25th Anniversary Special (1991)
Star Trek V: L’última frontera (1989)
McCoy
Star Trek IV: Missió salvar la Terra (1986)
Star Trek III: A la recerca de Spock (1984)
Star Trek II: La còlera del Khan (1982)
Star Trek I: La pel·lícula (1979)
The Star Trek Dream (1975)
Elgin Clark
Night of the Lepus (1972)
Ben Tully
The Bull of the West (1972)
Bill Rile
Waco (1966)
Tully
Ride the Wind (1966)
Toby Jack Saunders
Apache Uprising (1965)
Guy Tavenner
El pacificador de pobles (1965)
Sheriff Dal Nemo
Black Spurs (1965)
Sam Corwin
Where Love Has Gone (1964)
Amos Troop
Gunfight at Comanche Creek (1963)
Curley Burne
Warlock (1959)
Wexler
The Law and Jake Wade (1958)
Southern Officer
L’arbre de la vida (1957)
Lambert
The Edge of Innocence (1957)
Morgan Earp
Duel de titans (1957)
Jim Breck
Tensió a Table Rock (1956)
Jim - Hotel Clerk
The View from Pompey's Head (1955)
Edward Clary (as DeForest Kelly)
Illegal (1955)
Charlie (uncredited)
House of Bamboo (1955)
Eddie Lee
Duffy of San Quentin (1954)
Fred (uncredited)
Taxi (1953)
Dr. Sherman (uncredited)
The Men (1950)
Ted
Speak No Evil (1950)
Lt. Glenson (uncredited)
Malaya (1949)
'Ace' Martin
Duke of Chicago (1949)
Smalley
Canon City (1948)
Bob Rogers
Beyond Our Own (1947)
Bob Kirby
La noia de varietats (1947)
Vince Grayson
Fear in the Night (1947)
Peter
Time to Kill (1945)