The All-Ireland Senior Hurling Championship of 1972 was run on a provincial basis as usual. It was a knockout tournament with pairings drawn at random in the respective provinces - there were no seeds.
Each match was played as a single leg. If a match was drawn there was a replay. If that match ended in a draw a period of extra time was played, however, if both sides were still level at the end of extra time another replay had to take place.
Quarter-final: (1 match) This was a single match between the first two teams drawn from the province of Munster.
Semi-finals: (2 matches) The winner of the lone quarter-final joined the other three Munster teams to make up the semi-final pairings.
Final: (1 match) The winner of the two semi-finals contested this game.
Leinster Championship
First Round: (1 match) This was a single match between two of the 'weaker' teams drawn from the province of Leinster.
Quarter-finals: (2 matches) The winner of the first round game joined three other Leinster teams to make up the quarter-final pairings.
Semi-finals: (2 matches) The winners of the two quarter-finals joined Kilkenny and Wexford, who received a bye to this stage, to make up the semi-final pairings.
Final: (1 match) The winner of the two semi-finals contested this game.
All-Ireland Championship
Quarter-final: (1 match) This was a single match between Antrim and Galway, two teams who faced no competition in their respective provinces.
Semi-finals: (2 matches) The winner of the lone quarter-final joined London and the Munster and Leinster champions to make up the quarter-final pairings. The provincial champions were drawn in opposite semi-finals.
Final: (1 match) The winner of the two semi-finals contested this game.
S. O'Leary (3-0), C. McCarthy (1-4), D. Collins (1-3), J. McCarthy (0-6), R. Cummins (1-1), P. Hegarty (1-0), M. Malone (0-2), C. Roche (0-2), S. Looney (0-1), T. O'Brien (0-1).
R. Cashin (0-6), T. Connolly (1-1), F. Canning (0-2), P. McDermott (0-1), M. Connors (0-1), A. Smith (0-1).
E. Keher (2-9), L. O'Brien (0-5), F. Cummins (1-0), P. Delaney (0-3), K. Purcell (0-2), M. Crotty (0-2), P. Henderson (0-1), J. Kinsella (0-1), M. Murphy (0-1).
R. Cummins (2-3), M. Malone (2-1), S. O'Leary (1-1), C. McCarthy (0-4), C. Roche (0-2).