The following list or Presidents of the Past Pupils Union has been compiled.
| 1959-61 | William F. Treacy |
| 1961-63 | George Ted Russell |
| 1963-65 | Tom E. O’Donnell |
| 1965-67 | Conn Shanahan |
| 1967-68 | Michael B. O’Malley |
| 1968-70 | Pat J. Hogan |
| 1970-72 | Pat J. Carroll |
| 1972-74 | John Cyril Downes |
| 1974-75 | Fr. Tom Stack |
| 1975-77 | Jim F. Riordan |
| 1977-79 | Dr. Dermot Molony |
| 1979-81 | Eric Neville |
| 1982-05 | No Union in operation |
| 2006-10 | PPU informally reformed |
| 2011-13 | Brien Morris |
| 2013-15 | Don Reddan |
| 2015-17 | Gerry MacNamara |
| 2017-18 | Harry McNamara |
| 2018-19 | Orla Prendergast |
| 2019-20 | Eoin O’Sullivan |
| 2020-21 | Geraldine Heslin Deery |
| 2021-22 | Thomas Kelly |
Recent Presidents of the CCPPU (left to right) Brien Morris, Don Reddan, Harry McNamara, Eoin OSullivan, Geraldine Heslin Deery, Orla Prendergast, Gerry MacNamara