| Office: | Senator |
| Term Start: | 27 October 1977 |
| Term End: | 8 July 1981 |
| Constituency: | Nominated by the Taoiseach |
| Party: | Fianna Fáil |
| Nationality: | Irish |
| Birth Date: | 22 August 1932 |
| Birth Place: | County Kildare, Ireland |
Eileen Cassidy (22 August 1932 – 6 October 1995) was an Irish Fianna Fáil politician. A librarian, she was nominated by the Taoiseach to Seanad Éireann in 1977 and served until 1981.[1]
She was killed in an accident along with her husband Judge John Cassidy in 1995.[2]