The Kildare Under 21 Football Championship is an annual Gaelic football competition contested by the Kildare GAA clubs. This is a knockout competition restricted to players who are under the age of 21 on 1 January of the competition year.
| Year | Winner | Opponent | |
|---|---|---|---|
| 2020[1] | Not played due to Covid | ||
| 2019[2] | Naas 2-12 | Celbridge 1-09 | |
| 2018[3] | Clane 2-21 | Naas 1-21 | |
| 2017[4] | Sarsfields 2-14 | Athy 2-06 | |
| 2016[5] | Naas 0-07 | Moorefield 0-06 | |
| 2015 | Balyna 1-08 | Athy 0-10 | |
| 2014 | Celbridge 1-18 | Castledermot 1-10 | |
| 2013[6] | Sarsfields 0-15 | Balyna 1-09 | |
| 2012 | Celbridge 1-12 | Castledermot 1-10 | |
| 2011 | Athy 2-10 | Naas 2-05 | |
| 2010 | Athy 1-11 | Clane 1-08 | |
| 2009 | Balyna | St Laurence's | |
| 2008[7] | Na Fianna 2-06 | Balyna 1-07 | |
| 2007 | Sarsfields 0-11 | St Laurence's 0-09 | |
| 2006 | Round Towers 1-08 | Sarsfields 0-08 | |
| 2005 | Celbridge 1-09, 0-17 (R) | Na Fianna 1-09, 1-10 (R) aet | |
| 2004 | St Laurence's 1-14 | Confey 2-09 | |
| 2003 | Moorefield 1-11 | Confey 0-05 | |
| 2002 | |||
| 2001 | N.U.I. Maynooth 5-11 | Confey 0-04 | |
| 2000 | Moorefield 0-10 | N.U.I. Maynooth 0-09 | |
| 1999 | St. Cocas | Leixlip | |
| 1998 | Moorefield | ||
| 1997 | Moorefield | ||
| 1996 | |||