| Office: | Teachta Dála |
| Term Start: | June 1977 |
| Term End: | June 1981 |
| Constituency: | Dublin Artane |
| Birth Date: | 10 May 1923 |
| Birth Place: | Dublin, Ireland |
| Death Place: | Dublin, Ireland |
| Party: | Fianna Fáil |
Timothy Killeen (10 May 1923 – 2 March 1993) was an Irish Fianna Fáil politician. A company secretary, Killeen stood at the 1969 and 1973 general elections but was first elected to Dáil Éireann as a Teachta Dála (TD) for the Dublin Artane constituency at the 1977 general election.[1] Following constituency revisions, Killeen contested the 1981 general election for the Dublin North-West constituency but was defeated. He failed to be elected at the February 1982 and November 1982 general elections.[2]