Home History
| Republic of Ireland FAI Cup | 2021/11/20 17:30 | Carrigaline United v Kilnamanagh AFC | L | 1-0 |
| Republic of Ireland Leinster Senior League | 2021/11/07 11:00 | Bangor Celtic FC v Kilnamanagh AFC | L | 4-1 |
| Republic of Ireland Leinster Senior League | 2021/10/24 10:00 | Kilnamanagh AFC v Crumlin United | L | 1-2 |
| Republic of Ireland Amateur Cup | 2021/10/15 19:00 | Home Farm FC v Kilnamanagh AFC | W | 1-3 |
| Republic of Ireland Leinster Senior League | 2021/10/03 10:00 | Kilnamanagh AFC v Malahide Utd | D | 0-0 |
| Republic of Ireland Leinster Senior League | 2021/09/26 10:00 | Kilnamanagh AFC v Liffey Wanderers | D | 3-3 |
| Republic of Ireland Leinster Senior League | 2021/09/12 10:00 | Kilnamanagh AFC v Wayside Celtic | D | 3-3 |
| Republic of Ireland Leinster Senior League | 2021/09/09 18:45 | Glebe North FC v Kilnamanagh AFC | W | 0-2 |
Away History
| Republic of Ireland Amateur Cup | 2021/12/05 11:00 | Killester Donnycarney FC v Tolka Rovers | W | 4-0 |
| Republic of Ireland Leinster Senior League | 2021/11/26 19:45 | Malahide Utd v Killester Donnycarney FC | W | 0-3 |
| Republic of Ireland Leinster Senior League | 2021/11/12 19:45 | Wayside Celtic v Killester Donnycarney FC | L | 2-1 |
| Republic of Ireland Leinster Senior League | 2021/10/31 11:00 | Killester Donnycarney FC v Edenderry Town | W | 4-0 |
| Republic of Ireland FAI Intermediate Cup | 2021/10/17 10:00 | Killester Donnycarney FC v Cherry Orchard | W | 3-2 |
| Republic of Ireland Leinster Senior League | 2021/10/10 10:00 | Killester Donnycarney FC v Sacred Heart Firhouse Clover | W | 3-1 |
| Republic of Ireland Leinster Senior League | 2021/10/06 19:00 | Home Farm FC v Killester Donnycarney FC | W | 0-2 |
| Republic of Ireland Leinster Senior League | 2021/10/01 18:30 | Cherry Orchard v Killester Donnycarney FC | W | 1-4 |