|Irish name||Donncha Ó hEislip|
Knocktopher, County Kilkenny, Ireland
|Height||5 ft 9 in (1.75 m)|
Born in Knocktopher, County Kilkenny, Heaslip first excelled at hurling in his youth. He arrived on the inter-county scene when he first linked up with the Kilkenny senior team, making his debut in the 1957 championship. During his career Heaslip won two All-Ireland medals, three Leinster medals and one National Hurling League medal. He was an All-Ireland runner-up on two occasions.
The 1957 Championship featured in The 1958 film Rooney where the main character in the film wore a Kilkenny Jersey in the line up. During the film it depicts a goal that was "scored" by the main character (Rooney) this was in fact Denis Heaslip's goal.
- All-Ireland Senior Hurling Championship (2): 1957, 1963
- Leinster Senior Hurling Championship (3): 1957, 1959, 1964
- National Hurling League (1): 1961-62
- Railway Cup (1): 1962