Home History
| Club Friendly List | 2018/07/19 18:15 | Sheriff YC v Portmarnock AFC | D | 1-1 |
| Europe Friendlies | 2018/07/09 18:15 | Portmarnock AFC v Oxford Utd | L | 0-1 |
| Republic of Ireland Leinster Senior League | 2018/05/28 18:00 | Portmarnock AFC v Newbridge Town FC | W | 3-1 |
| Republic of Ireland Leinster Senior League | 2018/05/23 18:45 | St Mochtas v Portmarnock AFC | W | 0-2 |
| Republic of Ireland Leinster Senior League | 2018/05/20 10:00 | Killester Donnycarney FC v Portmarnock AFC | L | 3-2 |
| Republic of Ireland Leinster Senior League | 2018/05/16 18:00 | Portmarnock AFC v Sacred Heart Firhouse Clover | W | 4-3 |
| Republic of Ireland Leinster Senior League | 2018/05/02 18:47 | Bangor Celtic FC v Portmarnock AFC | D | 1-1 |
| Republic of Ireland Leinster Senior League | 2018/04/18 17:45 | Bluebell United v Portmarnock AFC | L | 3-2 |
Away History
| Republic of Ireland Leinster Senior League | 2018/08/27 19:00 | Crumlin United v Ballymun United | W | 0-6 |
| Republic of Ireland Leinster Senior League | 2018/08/26 10:00 | Ballymun United v Swords Celtic FC | W | 2-1 |
| Club Friendly List | 2018/07/31 19:30 | Crumlin United v Ballymun United | L | 3-1 |
| Europe Friendlies | 2018/07/24 19:30 | Ballymun United v Greenhills/Greenpark FC | W | 5-1 |
| Republic of Ireland Leinster Senior League | 2018/04/15 10:03 | Glenville v Ballymun United | L | 1-0 |
| Republic of Ireland Leinster Senior League | 2018/02/18 11:00 | UCD AFC v Ballymun United | W | 0-1 |
| Republic of Ireland Leinster Senior Cup | 2018/02/14 20:00 | St Patricks CY FC v Ballymun United | L | 2-0 |
| Republic of Ireland Leinster Senior Cup | 2018/01/28 14:09 | UCD v Ballymun United | D | 1-1 |