| Nancy O'Neil | |
| Birth Date: | 25 August 1907 |
| Birth Place: | Sydney Australia |
| Death Place: | London United Kingdom |
| Alma Mater: | RADA |
| Othername: | Nancy Smith |
| Occupation: | Film actress Stage actress |
| Yearsactive: | 1934 – 1962 (film) |
| Spouse: | Dermot Trench (m.1938–1984; his death) |
| Children: | 2 |
Nancy O'Neil (born Nancy Muriel Smith; 25 August 1907[1] – 5 March 1995) was an Australian-born British actress.[2] [3] [4]
| 1934 | Jack Ahoy | Patricia Fraser | ||
| 1934 | The Secret of the Loch | Angela Heggie | ||
| 1934 | Sometimes Good | Millie Tarrant | ||
| 1934 | Something Always Happens | Cynthia Hatch | ||
| 1934 | Crazy People | Nanda Macdonald | ||
| 1935 | Brewster's Millions | Cynthia | ||
| 1935 | Hello, Sweetheart | Helen Taylor | ||
| 1935 | Butter and Egg Man | |||
| 1936 | Twelve Good Men | Ann | ||
| 1936 | The Brown Wallet | Eleanor | ||
| 1936 | Educated Evans | Mary | ||
| 1936 | Head Office | Margaret | ||
| 1937 | Fifty-Shilling Boxer | Moira Regan | ||
| 1937 | The Angelus | June Rowland | ||
| 1937 | There Was a Young Man | Barbara Blake | ||
| 1937 | East of Ludgate Hill | |||
| 1938 | Darts Are Trumps | Mary Drake | ||
| 1940 | Garrison Follies | Sally Richards | ||
| 1943 | Somewhere in Civvies | Mary Randle | ||
| 1943 | Headline | Molly Dean | ||
| 1949 | Once a Jolly Swagman | 2nd Secretary | Uncredited | |
| 1953 | The Titfield Thunderbolt | Mrs. Blakeworth | ||
| 1962 | Solo for Sparrow | Miss Martin | Final film role |