| 1920 Sep 14 | Const W Carroll | Motor accident |
| 1920 Oct 3 | Const CV Chave | Shot in the street in Cork |
| 1920 Oct 30 | Constable Timothy Horan, 40 | of Kerry, killed in Castledaly, near Loughrea, County Galway. |
| 1920 Oct 31 | DI P StJ H Kelleher | Shot in pub in Grannard |
| 1920 Oct 31 | Two RIC Constables killed in gun battle in Abbeydorney. | |
| 1920 Oct 31 | One RIC killed and two wounded in IRA attack on Ballyduff police station. | |
| 1920 Oct 31 | Two RIC Constables killed at Hillville, near Killorglin. | |
| 1920 Oct 31 | Two RIC Constables killed in Tralee. | |
| 1920 Nov 6 | Constable Robert Gorbey, 23 | dies of wounds received in Ballyduff |
| 1920 Nov 9 | Const Archibald Turner, 28 | Shot dead by IRA gunmen while returning from leave by train. Ballybrack |
| 1920 Nov 9 | James Thomas Woods, 29 | Shot dead by IRA gunmen while returning from leave by train. Ballybrack |
| 1920 Nov 17 | Sgt James O. Donoghue, 46 | RIC, of Cahirciveen, killed in Cork City. |
| 1920 Dec 17 | Insp. PJ O'Sullivan | Shot in Henry St, Dublin |
| 1920 Dec 26 | W Muir | Suicide by cutting his throat with a razor |
| 1921 Jan 20 | Insp Tobias O'Sullivan | Shot while walking from his barracks with his small son.in Listowel |
| 1921 Mar 16 | Charles O'M Reynolds | Ambushed at Clifden Galway |
| 1921 Mar 16 | Thomas Sweeney | Ambushed at Clifden Galway |
| 1921 Mar 19 | A F Kenward | Crossbarry |