Leo Genn
- Compleanno:
- 08/09/1905
- Luogo di nascita:
- London, England, UK:
 | Sie sind frei, Dr. Korczak (1975) Dr. Janusz Korczak |
 | Frightmare (1974) Dr. Lytell |
 | The MacKintosh Man (1973) Rollins (uncredited) |
 | Le Silencieux (1973) Chief of M.I.5 |
 | Endless Night (1972) Psychiatrist (uncredited) |
 | Die Screaming Marianne (1971) The Judge |
 | Una lucertola con la pelle di donna (1971) Edmond Brighton |
 | Marie Stopes: Sexual Revolutionary (1970) Patrick Hastings, KC |
 | Connecting Rooms (1970) Dr. Norman |
 | Il trono di fuoco (1970) Lord Wessex |
 | The Strange Case of Dr. Jekyll and Mr. Hyde (1968) Dr. Lanyon |
 | Khartoum (1966) Narrator (voice) |
 | Circus of Fear (1966) Elliott |
 | Ten Little Indians (1965) General Mandrake |
 | Die Todesstrahlen des Dr. Mabuse (1964) Adm. Quency |
 | The Delhi Way (1964) Narrator (voice) |
 | 55 Days at Peking (1963) Gen. Jung-Lu |
 | The Longest Day (1962) Brig. Gen. Edwin P. Parker Jr. |
 | Das Leben von Adolf Hitler (1961) Narrator |
 | Too Hot to Handle (1960) Johnny Solo |
 | Era notte a Roma (1960) Michael Pemberton |
 | Mrs. Miniver (1960) Clem Miniver |
 | Tank Force! (1958) Sgt. Kendall |
 | I Accuse! (1958) Maj. Picquart |
 | The Steel Bayonet (1958) Maj. Gerrard |
| | The Immortal Land (1958) |
 | Beyond Mombasa (1956) Ralph Hoyt |
 | Moby Dick (1956) Starbuck |
 | The Titanic Incident (1955) Paul Bernard |
 | L'Amant de Lady Chatterley (1955) Sir Clifford Chatterley |
 | Chantage (1955) Lionel Kendall |
 | The Green Scarf (1954) Rodelec |
| | Tonight in Britain (1954) Self - Commentator |
 | Personal Affair (1953) Stephen Barlow |
 | The Red Beret (1953) Major J. Snow |
 | Elizabeth Is Queen (1953) Narrator |
 | The Girls of Pleasure Island (1953) Roger Halyard |
 | Plymouth Adventure (1952) William Bradford |
 | 24 Hours of a Woman's Life (1952) Robert Sterling |
 | The Magic Box (1952) Maida Vale Doctor |
 | Quo Vadis (1951) Petronius |
| | Power for All (1951) Narrator |
 | The Undefeated (1950) Joe Anderson (voice) |
 | The Miniver Story (1950) Steve Brunswick |
 | The Wooden Horse (1950) Peter Howard |
| | I Went Back (1950) Narrator |
 | No Place for Jennifer (1950) William Parry |
 | London Belongs to Me (1948) Narrator (uncredited) |
 | The Snake Pit (1948) Doctor Mark H. Van Kensdelaerik (Dr. "Kik") |
 | The Velvet Touch (1948) Michael Morrell |
 | Mourning Becomes Electra (1947) Adam Brant |
 | Green for Danger (1946) Mr. Eden |
 | Theirs Is the Glory (1946) Narrator (uncredited) |
 | Caesar and Cleopatra (1945) Bel Affris |
| | Famous Scenes from Shakespeare No. I: Julius Caesar - The Forum Scene - Act III. Scene 2 (1945) Marcus Antonius |
 | The Chronicle History of King Henry the Fifth with His Battell Fought at Agincourt in France (1944) The Constable of France |
| | The Return of the Vikings (1944) Narrator (voice) |
 | Attack! The Battle for New Britain (1944) Narrator (voice) |
 | The Way Ahead (1944) Captain Edwards |
 | Tunisian Victory (1944) Narrator (voice) |
 | The Bells Go Down (1943) Off-Screen Narrator (uncredited) |
 | The Young Mr. Pitt (1942) Danton (uncredited) |
 | Girl in the News (1940) Prosecuting Counsel (Uncredited) |
 | Law and Disorder (1940) Another Agent |
 | Ten Days in Paris (1940) Lanson |
 | Contraband (1940) First Brother Grimm |
| | French Communique (1940) Commentator |
 | Pygmalion (1939) Prince (uncredited) |
| | Dangerous Medicine (1938) Murdoch |
 | Kate Plus Ten (1938) Dr. Gurdon |
 | The Rat (1937) Defending Counsel |
 | Jump for Glory (1937) Prosecuting Counsel |
 | Accused (1936) Man |
| | The Dream Doctor (1936) Husband |