Niall MacGinnis Filmography
- Actor (80 credits)
- A History of Horror with Mark Gatiss (2010) Dr. Julian Karswell, хроника, not listed in credits
- Crisis in Sun Valley (1978) James
- Shades of Greene (1975) The Professor
- The MacKintosh Man (1973) Warder
- The Kremlin Letter (1970) Erector Set
- Darling Lili (1970) Von Hindenburg, not listed in credits
- Sinful Davey (1969) Boots Simpson
- The Shoes of the Fisherman (1968) Capuchin Monk
- Krakatoa: East of Java (1968) Harbor Master
- Torture Garden (1967) Dr. Silversmith (segment 1 'Enoch')
- The Viking Queen (1967) Tiberian
- A Man Could Get Killed (1966) Ship's Captain
- Island of Terror (1966)
- The Truth About Spring (1965)
- The War Lord (1965) Odins
- The Spy Who Came in from the Cold (1965) German Checkpoint Guard
- Blackmail (1965) Fred
- Becket (1964) Baron
- Danger Man (1964) A.J.A. Kent
- Festival (1963) Peter Keegan
- Playboy of the Western World (1963) Old Mahon
- Jason and the Argonauts (1963) Zeus
- Face in the Rain (1963) Klaus
- The Man Who Finally Died (1963) Brenner
- The Devil's Agent (1962) Paul Vass
- Billy Budd (1962)
- The Webster Boy (1962) Headmaster
- Johnny Nobody (1961) Defending Counsel Sullivan
- Foxhole in Cairo (1960) Radek
- In the Nick (1960) Prison Governor
- Kidnapped (1960) Mr. Shuan
- Sword of Sherwood Forest (1960)
- Never Take Sweets from a Stranger (1960) Defense Counsel
- A Terrible Beauty (1960) Ned O'Neill (Dermot's brother)
- This Other Eden (1959) Devereaux
- Tarzan's Greatest Adventure (1959)
- Shake Hands with the Devil (1959) Michael O'Leary
- The Nun's Story (1959) Father Vermeuhlen (Leprosarium)
- The Veil (1958) Walter Durst
- Behind the Mask (1958) Neil Isherwood
- She Didn't Say No! (1958) James Casey
- The Shiralee (1957) Beauty Kelly
- Night of the Demon (1957)
- Alexander the Great (1956)
- Lust for Life (1956) Roulin
- Helen of Troy (1956) Menelaus
- Vom Himmel gefallen (1955) Sidney
- Hell Below Zero (1954) Dr. Howe
- Conflict of Wings (1954) Harry Tilney
- Betrayed (1954) Blackie
- Martin Luther (1953)
- Knights of the Round Table (1953) Green Knight
- Talk of a Million (1951) Tom Cassidy
- No Highway (1951) Captain Samuelson, Pilot, not listed in credits
- Murder in the Cathedral (1951) Herald
- Chance of a Lifetime (1950) Baxter
- Diamond City (1949) Hans Muller
- Christopher Columbus (1949) Juan de la Cosa
- Anna Karenina (1948) Levin
- Death at Newtownstewart (1948) District Inspector Montgomery
- No Room at the Inn (1948) O'Rane
- Hamlet (1948) Sea Captain
- Captain Boycott (1947) Mark Killain
- The Chronicle History of King Henry the Fifth with His Battell Fought at Agincourt in France (1944) Macmorris - Captain in the English Army
- Tawny Pipit (1944)
- The Hundred Pound Window (1944) Chick Slater
- Undercover (1943) Dr. Jordon
- The Demi-Paradise (1943) Man on ship-dedication stand, not listed in credits
- We Dive at Dawn (1943) Torpedo Gunner's Mate - C / P.O. Mike Corrigan
- The Day Will Dawn (1942) Olaf
- 49th Parallel (1941)
- East of Piccadilly (1941)
- Mountains O'Mourne (1938) Paddy Kelly
- The Last Adventurers (1937) Jeremy Bowker
- The Edge of the World (1937) The Gray Family: Andrew, His Son
- The Luck of the Irish (1936) Derek O'Neill
- Ourselves Alone (1936) Terence Elliott
- Debt of Honour (1936) Lt. Peter Stretton
- The Crimson Circle (1936) Jack Beardmore
- Turn of the Tide (1935) John Lunn
