Credits

• 1997 · Bogart: The Untold Story as Self (archive footage) (uncredited)
• 1983 · Hollywood Out-takes and Rare Footage as Self (archive footage) (uncredited)
• 1981 · The Godfather 1901–1959: The Complete Epic as Don Emilio Barzini
• 1977 · Mario Puzo's The Godfather: The Complete Novel for Television as Don Emilio Barzini
• 1975 · The Return of the Exorcist as Exorcist
• 1975 · Violent Rome as Lawyer Sartori
• 1975 · A Diary of a Murderess as The Millionaire
• 1975 · Evil Eye as Dr. Stone
• 1974 · Shoot First, Die Later as Mazzanti
• 1973 · Anna: the Pleasure, the Torment as Riccardo Sogliani
• 1973 · Tony Arzenta as Nick Gusto
• 1973 · The Violent Professionals as Padulo
• 1973 · My Brother Anastasia as Alberto 'Big Al' Anastasia
• 1973 · The Big Family as Don Antonio Marchesi
• 1973 · 1931: Once Upon a Time in New York as Bruno
• 1973 · The Boss as Don Corrasco
• 1972 · The Godfather as Barzini
• 1970 · The Challengers as Ritchie
• 1969 · Explosion as Dr. Philip Neal
• 1968 · Lady in Cement as Lt. Dave Santini
• 1968 · Death Sentence as Diaz
• 1968 · Operation Cross Eagles as Lt. Bradford
• 1967 · Tony Rome as Lt. Dave Santini
• 1967 · The Danny Thomas Hour as Jeff Hoffman
• 1967 · Hotel as Detective Dupere
• 1966 · The Jean Arthur Show as
• 1966 · Assault on a Queen as Tony Moreno
• 1965 · Synanon as Reid Kimble
• 1965 · The Greatest Story Ever Told as Barabbas
• 1965 · Stay Tuned for Terror as Steven Jameson
• 1964 · Circus World as Aldo Alfredo
• 1964 · The Eyes of Annie Jones as David Wheeler
• 1963 · Who's Been Sleeping in My Bed? as Leonard Ashley
• 1963 · Kraft Suspense Theatre as Jack Sallas
• 1963 · Arrest and Trial as Paul Dunnell
• 1962 · Going My Way as
• 1961 · Bus Stop as
• 1961 · Kraft Mystery Theatre as
• 1960 · Pepe as Richard Conte
• 1960 · Checkmate as Victor Ragar/Romak
• 1960 · Ocean's Eleven as Anthony Bergdorf
• 1959 · The Untouchables as Arnie Seeger
• 1959 · The Twilight Zone as Edward Hall
• 1959 · The Four Just Men as Jeff Ryder
• 1959 · They Came to Cordura as Cpl. Milo Trubee
• 1958 · 77 Sunset Strip as Detective Lieut. Butter
• 1958 · Naked City as Phil Clifford
• 1958 · The Donna Reed Show as
• 1957 · This Angry Age as Michael
• 1957 · The Brothers Rico as Eddie Rico
• 1956 · Full of Life as Nick Rocco
• 1955 · I'll Cry Tomorrow as Tony Bardeman
• 1955 · Target Zero as Lt. Tom Flagler
• 1955 · The 20th Century Fox Hour as
• 1955 · The 20th Century Fox Hour as Jimmy Ringo
• 1955 · Alfred Hitchcock Presents as Frank Burns
• 1955 · Bengazi as John Gillmore
• 1955 · Little Red Monkey as Bill Locklin
• 1955 · The Big Tip Off as Johnny Denton
• 1955 · New York Confidential as Nick Magellan
• 1955 · The Big Combo as Mr. Brown
• 1954 · Mask of Dust as Peter Wells
• 1954 · Highway Dragnet as James 'Jim' Henry
• 1953 · Slaves of Babylon as Nahum
• 1953 · Desert Legion as Crito
• 1953 · The Blue Gardenia as Casey Mayo
• 1953 · The Oscars as Self
• 1953 · General Electric Theater as Michael Girard
• 1952 · The Raiders as Jan Morrell
• 1952 · The Ford Television Theatre as Martin Crawford
• 1952 · The Fighter as Felipe Rivera
• 1951 · The Raging Tide as Bruno Felkin
• 1951 · Hollywood Story as Larry O'Brien
• 1951 · Under the Gun as Bert Galvin
• 1950 · The Sleeping City as Fred Rowan
• 1950 · The Hollywood Ten as Self (archive footage) (uncredited)
• 1950 · Whirlpool as Dr. William 'Bill' Sutton
• 1949 · Thieves' Highway as Nick Garcos
• 1949 · House of Strangers as Max Monetti
• 1949 · Big Jack as Dr. Alexander Meade
• 1948 · Cry of the City as Martin Rome
• 1948 · Call Northside 777 as Frank W. Wiecek
• 1947 · Donald's Dilemma as Psychiatrist (uncredited)
• 1947 · The Other Love as Paul Clermont
• 1947 · 13 Rue Madeleine as William H. 'Bill' O'Connell
• 1946 · Somewhere in the Night as Mel Phillips
• 1945 · A Walk in the Sun as Pvt. Rivera
• 1945 · The Spider as Chris Conlon
• 1945 · A Bell for Adano as Nicolo - Italian POW
• 1945 · Captain Eddie as Pvt. John Bartek
• 1944 · The Purple Heart as Lt. Angelo Canelli
• 1943 · Guadalcanal Diary as Capt. Davis
• 1939 · Heaven with a Barbed Wire Fence as Tony Casselli
• Future · Emergency as Harvey Barron