| Republic of Ireland Leinster Senior League | 2021/09/09 18:45 | Glebe North FC v Kilnamanagh AFC | W | 0-2 |
| Republic of Ireland Leinster Senior League | 2021/09/05 10:00 | Kilnamanagh AFC v Sacred Heart Firhouse Clover | L | 1-4 |
| Republic of Ireland FAI Cup | 2021/08/27 18:45 | Waterford FC v Kilnamanagh AFC | L | 4-1 |
| Republic of Ireland Leinster Senior League | 2021/08/20 17:45 | Bluebell United v Kilnamanagh AFC | W | 0-1 |
| Republic of Ireland Leinster Senior League | 2021/08/13 18:45 | Malahide Utd v Kilnamanagh AFC | L | 3-1 |
| Republic of Ireland Leinster Senior League | 2021/07/28 18:30 | Crumlin United v Kilnamanagh AFC | L | 4-0 |
| Republic of Ireland FAI Cup | 2021/07/23 19:00 | St Kevins Boys v Kilnamanagh AFC | W | 1-4 |
| Republic of Ireland Leinster Senior League | 2021/07/22 18:45 | Sacred Heart Firhouse Clover v Kilnamanagh AFC | L | 1-0 |
| Republic of Ireland Leinster Senior League | 2021/09/05 11:00 | Wayside Celtic v Liffey Wanderers | L | 0-1 |
| Republic of Ireland Leinster Senior League | 2021/08/29 11:00 | Crumlin United v Wayside Celtic | W | 2-3 |
| Republic of Ireland Leinster Senior League | 2021/08/28 12:00 | St Patricks CY FC v Wayside Celtic | W | 2-4 |
| Republic of Ireland Leinster Senior League | 2021/08/13 18:00 | Bluebell United v Wayside Celtic | L | 3-1 |
| Republic of Ireland Leinster Senior League | 2021/08/08 11:00 | Wayside Celtic v Edenderry Town | W | 3-2 |
| Republic of Ireland Leinster Senior League | 2021/07/28 18:30 | Wayside Celtic v Maynooth University Town FC | D | 0-0 |
| Republic of Ireland Leinster Senior League | 2021/07/23 19:00 | Cherry Orchard v Wayside Celtic | W | 0-3 |
| Republic of Ireland Leinster Senior League | 2021/07/16 18:45 | St Mochtas v Wayside Celtic | L | 2-0 |