| Surname | Forename | Rank | Killed | By | How Killed |
| Monteith | Derek | Inspector | 22-Jan-1990 | IRA | Fatally wounded in gun attack on his home in Armagh |
| | | | | |
| Starrett | George | R/Constable | 28-Mar-1990 | IRA | Fatally wounded in gun attack on his home in Armagh |
| | | | | |
| Beckett | Harry | Constable | 30-Jun-1990 | IRA | Fatally wounded in gun attack in Queen St/ Castle St, Belfast |
| | | | | |
| Meyer | Gary | Constable | 30-Jun-1990 | IRA | Fatally wounded in gun attack in Queen St/ Castle St, Belfast |
| | | | | |
| Hanson | William | Constable | 24-Jul-1990 | IRA | Killed in landmine explosion between Armagh and Caledon, Co. Armagh |
| | | | | |
| Sterritt | David | R/Constable | 24-Jul-1990 | IRA | Killed in landmine explosion between Armagh and Caledon, Co. Armagh |
| | | | | |
| Willis | Cyril | R/Constable | 24-Jul-1990 | IRA | Killed in landmine explosion between Armagh and Caledon, Co. Armagh |
| | | | | |
| Robinson | Louis | D/Constable | 16-Sep-1990 | IRA | Abducted as he travelled back across the border after a fishing trip to the south. His body was found two days later near Killeen, Co. Armagh |
| | | | | |
| Todd | Samuel | Constable | 15-Oct-1990 | IRA | Fatally wounded in gun attack in High Street, Belfast |
| | | | | |
| Murphy | David | D/Inspector | 10-Nov-1990 | IRA | Fatally wounded in a gun attack on the shore of Lough Neagh |
| | | | | |
| Taylor | Thomas | R/Constable | 10-Nov-1990 | IRA | Fatally wounded in a gun attack on the shore of Lough Neagh |
| | | | | |
| Wethers | Wilfred | R/Constable | 20-Dec-1990 | IRA | Fatally wounded in gun attack at Banbridge Road, Lurgan |
