| Jack Brennan | |
| Birth Place: | Wigan, England |
| Club1: | Blackpool Borough |
| Club2: | Salford |
| Year2start: | 1959 |
| Year2end: | 70 |
| Appearances2: | 329 |
| Tries2: | 70 |
| Goals2: | 3 |
| Points2: | 216 |
| Club3: | Warrington |
| Year3start: | 1970 |
| Year3end: | 71 |
| Appearances3: | 3 |
| Tries3: | 1 |
| Goals3: | 0 |
| Points3: | 3 |
| Teama: | Lancashire |
| Yearastart: | 1958 |
| New: | yes |
| Retired: | yes |
| Source: | [1] [2] |
Jack Brennan is an English former professional rugby league footballer who played as a . Born in Wigan, Brennan began his career at Blackpool Borough, and went on to play for Salford and Warrington. He also represented Lancashire.
Brennan started his rugby league career with Blackpool Borough, joining the club at the age of seventeen. In August 1959, he joined Salford for a fee of £5,000.
In 1969, he played in the Challenge Cup Final at Wembley Stadium against Castleford, which Salford lost 6–11. He joined Warrington during the 1970–71 season, but retired after only three appearances for the club.
Brennan made two appearances for Lancashire in 1958 whilst at Blackpool Borough, losing both games to Yorkshire.[3] [4]