| Sligo Under-21 Football Championship | |
| First: | 1975 |
| Firstwin: | Shamrock Gaels |
| Trophy: | Dr. T.J. Lavin Cup |
| Current: | Easkey / Enniscrone |
| Most: | St Mary's |
| Mostordinal: | 8 |
The Sligo Under-21 Football Championship is an annual Gaelic Athletic Association competition between the Under-21 panels of the clubs in Sligo. Up to 2006 this was the Under-21 Championship, but a decision was taken to hold the Championship a year earlier (i.e. for Under-20s), therefore there were two Championships in 2006 - an Under-21 Championship (won by Ballymote), and the Under-20 competition, in which Tourlestrane defeated Eastern Harps in the final. No competition was held in 2014 as it was decided to re-instate the competition in its Under-21 format for 2015. An amalgamated team of Easkey / Enniscrone are the current champions (2019).
| Club | Wins | Years won | Last final lost | |
|---|---|---|---|---|
| 1 | St Mary's | 8 | 1985, 1986, 2000, 2012, 2013, 2015, 2016, 2018 | 2001 |
| 2 | Tubbercurry | 7 | 1978, 1979, 1980, 1981, 1983, 2007, 2017 | 2013 |
| 3 | Shamrock Gaels | 4 | 1975, 1987, 1988, 1989 | 2018 |
| 4 | Tourlestrane | 3 | 1976, 2006 (U20), 2008 | 2017 |
| Eastern Harps | 3 | 1994, 1998, 2001 | 2012 | |
| Curry | 3 | 1996, 2004, 2005 | 2011 | |
| 5 | Coolera/Strandhill | 2 | 2002, 2009 | 2012 |
| Owenmore Gaels | 2 | 1982, 1984 | n/a | |
| St Nathy's (Bunninadden & Coolaney/Muillinabreena) | 2 | 1992, 1993 | n/a | |
| Easkey/St. Farnan's | 2 | 1995, 1997 | 2010 | |
| Ballymote | 2 | 2003, 2006 (U21) | n/a | |
| 6 | Grange | 1 | 1977 | 1976 |
| Enniscrone | 1 | 1990 | n/a | |
| Drumcliffe–Rosses Point | 1 | 1991 | 1992 | |
| Easkey / Enniscrone | 1 | 2019 | 2016 | |
| Calry/St. Joseph's | 1 | 2010 | n/a | |
| St. John's | 1 | 2011 | n/a | |
| St. Molaise Gaels | 1 | 2021 | 2022 | |
| Bunninadden/Ballymote | 1 | 2022 | 2021 | |
Note - 1975-2006: Under-21, 2006–2013: Under-20, no competition in 2014, 2015-present: Under-21.
County Champions shown in bold type.
Note - 1998-2006: Under-21, 2006–present: Under-20.
| Year | Winner | Score | Opponent | Score | |
|---|---|---|---|---|---|
| 2022 | Curry | 1-07 | Tubbercurry/Cloonacool | 0-06 | |
| 2009 | St Mary's | 1-06 | Bunninadden | 0-06 | |
| 2008 | Shamrock Gaels | 0-08 | Drumcliffe–Rosses Point | 0-05 | |
| 2007 | St. Patrick's, Dromard | 2-14 | Bunninadden | 1-06 | |
| 2006 (U20) | Naomh Molaise Gaels | 0-06, 3-05 (R) | Curry | 0-06, 0-11 (R) | |
| 2006 (U21) | Naomh Molaise Gaels | 3-06 | Coolera/Strandhill | 1-06 | |
| 2005 | St. Farnan's | w/o | Tubbercurry | scr. | |
| 2004 | St. John's | 2-06 | Calry/St. Joseph's | 1-05 | |
| 2003 | Shamrock Gaels | 0-14 | Calry/St. Joseph's | 1-08 | |
| 2002 | Ballymote | 2-08, 1-08 (R) | Bunninadden | 1-11, 1-04 (R) | |
| 2001 | Tubbercurry | 2-14 (R) | Cloonacool | 0-09 (R) | |
| 2000 | Drumcliffe–Rosses Point | 3-08 | Bunninadden | 2-02 | |
| 1999 | No competition |