| Office: | Senator |
| Term Start: | 22 July 1954 |
| Term End: | 5 November 1969 |
| Constituency: | Agricultural Panel |
| Office1: | Teachta Dála |
| Term Start1: | July 1937 |
| Term End1: | May 1954 |
| Constituency1: | Cork West |
| Party: | Fianna Fáil |
| Birth Date: | 26 July 1899 |
| Birth Place: | Bantry, County Cork, Ireland |
| Death Place: | County Cork, Ireland |
| Children: | 12 |
| Relatives: | Peggy Farrell (niece) |
Timothy (Ted) O'Sullivan (26 July 1899 – 3 March 1971) was an Irish Fianna Fáil politician from County Cork. He was a Teachta Dála (TD) for 27 years, and a Senator for 15 years.[1] [2]
O'Sullivan was elected to Dáil Éireann at his first attempt, as a Fianna Fáil candidate for the Cork West constituency at the 1937 general election.[1] He was re-elected for Cork West at the next five general elections, until he retired from the Dáil at the 1954 general election.[3]
He was then stood in the 1954 election to Seanad Éireann, on the Agricultural Panel, and was elected to the 8th Seanad. He was re-elected by the Agricultural Panel at the next three Seanad elections, before retiring from politics in 1969, after completing his term in the 11th Seanad.[3]
His niece Peggy Farrell was a senator from 1969 to 1973.[4]