Irish Open
* Denotes playoff| Year | Venue | Champion | Score |
| 2015* | Royal County Down | Soren Kjeldsen | 282 |
| 2014 | Fota Island | Mikko Ilonen | 271 |
| 2013 | Carton House | Paul Casey | 274 |
| 2012 | Royal Portrush | Jamie Donaldson | 270 |
| 2011 | Killarney Golf and Fishing Club Killeen Course | Simon Dyson | 269 |
| 2010 | Killarney Golf and Fishing Club Killeen Course | Ross Fisher | 266 |
| 2009* | County Louth (Baltray) | Shane Lowry (Am) | 271 |
| 2008 | Adare Manor Hotel & Golf Resort | Richard Finch | 278 |
| 2007* | Adare Manor Hotel & Golf Resort | Padraig Harrington | 283 |
| 2006 | Carton House | Thomas Bjorn | 283 |
| 2005 | Carton House | Stephen Dodd | 279 |
| 2004 | County Louth (Baltray) | Brett Rumford | 276 |
| 2003* | Portmarnock Golf Club | Michael Campbell | 277 |
| 2002* | Fota Island Golf Club | Soren Hansen | 270 |
| 2001 | Fota Island Golf Club | Colin Montgomerie | 267 |
| 2000 | Ballybunion Golf Club | Patrik Sjoland | 270 |
| 1999 | Druid's Glen Golf Club | Sergio Garcia | 268 |
| 1998 | Druid's Glen Golf Club | David Carter | 278 |
| 1997 | Druid's Glen Golf Club | Colin Montgomerie | 269 |
| 1996 | Druid's Glen Golf Club | Colin Montgomerie | 279 |
| 1995* | Mount Juliet Golf Club | Sam Torrance | 277 |
| 1994 | Mount Juliet Golf Club | Bernhard Langer | 275 |
| 1993* | Mount Juliet Golf Club | Nick Faldo | 276 |
| 1992* | Killarney Golf Club | Nick Faldo | 274 |
| 1991 | Killarney Golf Club | Nick Faldo | 283 |
| 1990 | Portmarnock Golf Club | Jose Maria Olazabal | 282 |
| 1989 | Portmarnock Golf Club | Ian Woosnam | 278 |
| 1988 | Portmarnock Golf Club | Ian Woosnam | 278 |
| 1987 | Portmarnock Golf Club | Bernhard Langer | 269 |
| 1986 | Portmarnock Golf Club | Seve Ballesteros | 285 |
| 1985* | The Royal Dublin Golf Club | Seve Ballesteros | 278 |
| 1984 | The Royal Dublin Golf Club | Bernhard Langer | 267 |
| 1983 | The Royal Dublin Golf Club | Seve Ballesteros | 271 |
| 1982 | Portmarnock Golf Club | John O'Leary | 287 |
| 1981 | Portmarnock Golf Club | Sam Torrance | 276 |
| 1980 | Portmarnock Golf Club | Mark James | 284 |
| 1979 | Portmarnock Golf Club | Mark James | 282 |
| 1978 | Portmarnock Golf Club | Ken Brown | 281 |
| 1977 | Portmarnock Golf Club | Hubert Green | 283 |
| 1976 | Portmarnock Golf Club | Ben Crenshaw | 284 |
| 1975 | Woodbrook Golf Club | Christy O'Connor Jnr | 275 |
| 1974 - 1954 No Irish Open | |||
| 1953 | Belvoir Park Golf Club | Eric Brown | 272 |
| 1952 | |||
| 1951 | |||
| 1950 | The Royal Dublin Golf Club | H. Pickworth | 287 |
| 1949 | Belvoir Park Golf Club | Harry Bradshaw | 286 |
| 1948 | Portmarnock Golf Club | Dai Rees | 295 |
| 1947 | Royal Portrush Golf Club | Harry Bradshaw | 290 |
| 1946 | Portmarnock Golf Club | Fred Daly | 288 |
| 1945 - 1940 No Irish Open | |||
| 1939 | Newcastle Golf Club | Arthur Lees | 287 |
| 1938 | Portmarnock Golf Club | Bobby Lock | 292 |
| 1937 | Royal Portrush Golf Club | B. Gadd | 284 |
| 1936 | The Royal Dublin Golf Club | Reg Whitcombe | 281 |
| 1935 | Newcastle Golf Club | Ernest Whitcombe | 292 |
| 1934 | Portmarnock Golf Club | Syd Easterbrook | 284 |
| 1933 | Malone Golf Club | K. Kenyon | 286 |
| 1932 | Cork Golf Club | Alf Padgham | 283 |
| 1931 | The Royal Dublin Golf Club | E. Kenyon | 291 |
| 1930 | Royal Portrush Golf Club | Charles Whitcombe | 289 |
| 1929 | Portmarnock Golf Club | Abe Mitchell | 309 |
| 1928 | Newcastle Golf Club | Ernest Whitcombe | 288 |
| 1927 | Portmarnock Golf Club | George Duncan | 312 |