 | Battlestar Galactica: The Second Coming (1999) as Commander Adama (archive footage) |
 | The Alamo: Thirteen Days to Glory (1987) as Gen. Sam Houston |
 | The Canadian Conspiracy (1986) as Self |
 | Vasectomy: A Delicate Matter (1986) as Theo |
 | Noah's Ark (1986) as Noah (voice) |
 | The Nutcracker: A Fantasy on Ice (1984) as Self - Narrator |
 | Heidi's Song (1982) as Grandfather (voice) |
 | Conquest of the Earth (1980) as Cmdr. Adama |
 | A Time for Miracles (1980) as Bishop John Carroll |
 | Klondike Fever (1980) as Inspector Sam Steele |
 | Mission Galactica: The Cylon Attack (1979) as Cmdr. Adama |
 | A Walking Tour of Sesame Street (1979) as Ben Cartwright (archive footage) (uncredited) |
 | The Little Brown Burro (1978) as Storyteller (voice) |
 | Battlestar Galactica (1978) as Cmdr. Adama |
 | SST: Death Flight (1978) as Marshall Cole |
 | The Case of the Baltimore Girls (1978) as Wade Griffin |
| | Yabba Dabba Doo! The Happy World of Hanna-Barbera (1977) as Self |
 | Man on the Outside (1975) as Wade Griffin |
 | Tidal Wave (1975) as Ambassador Warren Richards |
 | Nevada Smith (1975) as Jonas Cord |
| | Wings in the Wilderness (1975) as Self |
 | High Country Calling (1975) |
 | Earthquake (1974) as Sam Royce |
 | Rex Harrison Presents Stories of Love (1974) as Hercule |
 | Sandy in Disneyland (1974) as Self |
 | Grierson (1973) as Self |
 | The Legend of Amaluk: An Arctic Journey (1972) as Narrator |
 | The Special London Bridge Special (1972) as Fiddler on the Roof |
 | Death Follows a Psycho (1972) |
 | The Harness (1971) as Peter Randall |
| | A Place in History (1970) as Narrator |
| | A Man for Loving (1970) as James Beal |
 | The Gifts (1970) as Narrator |
 | Swing Out, Sweet Land (1970) as George Washington |
 | Destiny of a Spy (1969) as Peter Vanin |
 | The Dean Martin Christmas Show (1968) as Self (uncredited) |
 | A Way Out of the Wilderness (1968) as Narrator |
 | Rowan & Martin at the Movies (1968) as Self |
 | Christmas with Lorne Greene (1966) |
 | Ride the Wind (1966) as Ben Cartwright |
 | The New March of Dimes Presents: The Scene Stealers (1962) as Self |
 | The Hangman (1959) as Clem J. Cummings |
 | The Trap (1959) as Davis |
 | The Buccaneer (1958) as Mercier |
 | The Last of the Fast Guns (1958) as Michael O'Reilly |
 | The Gift of Love (1958) as Grant Allan |
 | Peyton Place (1957) as District Attorney |
 | The Hard Man (1957) as Rice Martin |
 | The Edge of Innocence (1957) as Lowell Williams |
 | Mayerling (1957) as Emperor's Aide |
 | Autumn Leaves (1956) as Mr. Hanson |
 | Tight Spot (1955) as Benjamin Costain |
 | The Silver Chalice (1954) as Peter |
 | Social-Sex Attitudes in Adolescence (1953) as narrator |
 | 1984 (1953) as O'Brien |
 | Farewell Oak Street (1953) as Narrator |
 | Meaning of Adolescence (1953) as Narrator |
 | Age of Turmoil (1953) as Narrator |
| | Eye Witness No. 33 (1951) as Self - Narrator (voice) |
 | The Cliff Hangers (1950) as Self - Narration (voice) |
| | Date of Birth (1950) as Narration (voice) |
| | White Fortress (1949) as Self - Narrator |
| | A Capital Plan (1949) as Narrator |
| | What's on Your Mind (1948) as Narrator |
 | Johnny at the Fair (1947) |
| | Tomorrow's Citizens (1947) as Narrator |
| | Headline Hunters (1945) as Narrator (voice) |
 | Gateway to Asia (1945) as Narrator (voice) |
| | Suffer Little Children (1945) as Himself - Narrator |
| | The War Is Over (1945) as Narrator |
| | Now—The Peace (1945) as Narrator (uncredited) |
| | Ordeal by Ice (1945) as Narrator (voice) |
| | Wounded in Action (1944) as Narrator (voice) |
| | Look to the North (1944) as Narrator (voice) |
 | Global Air Routes (1944) as Narrator (voice) |
| | Our Northern Neighbour (1944) as Narrator (voice) |
| | Pincers on Japan (1944) as Narrator |
| | Train Busters (1944) as Narrator (voice) |
| | Trans-Canada Express (1944) as Narrator (voice) |
| | Break-through (1944) as Himself - Narrator |
| | Fighting Sea-Fleas (1944) as Narrator (voice) |
 | Fighting Norway (1943) as Narrator (voice) |
| | The Mask of Nippon (1942) as Narrator (voice) |
| | The Battle for Oil (1942) as Narrator |
 | Inside Fighting China (1942) as Narrator |
| | Warclouds in the Pacific (1941) as Narrator (voice) |
 | Churchill's Island (1941) as Narrator (voice) |
| | Heroes of the Atlantic (1941) as Narrator (voice) |
| | Battle of Brains (1941) as Narrator (voice) |
| | Wings of Youth (1940) as Narrator (voice) |
 | Children from Overseas (1940) as Narrator |
| | Front of Steel (1940) as Narrator |
 | Home Front (1940) as Narrator |
 | Atlantic Patrol (1940) as Narrator |
