| 01 January 1980 | Simon Bates (23) nfNI Status: British Army (BA), Killed by: British Army (BA) Undercover British Army (BA) member. Shot in error, by other British Army (BA) members while setting ambush position, near Forkhill, County Armagh. |
| 01 January 1980 | Gerald Hardy (18) nfNI Status: British Army (BA), Killed by: British Army (BA) Undercover British Army (BA) member. Shot in error, by other British Army (BA) members while setting ambush position, near Forkhill, County Armagh. |
| 01 January 1980 | Doreen McGuinness (16) Catholic Status: Civilian (Civ), Killed by: British Army (BA) Shot while travelling in stolen car at British Army (BA) Vehicle Check Point (VCP), Whiterock Road, Ballymurphy, Belfast. |
| 02 January 1980 | Samuel Lundy (62) Protestant Status: ex-Ulster Defence Regiment (xUDR), Killed by: Irish Republican Army (IRA) Shot at his workplace, Kingsmills, near Bessbrook, County Armagh. |
| 03 January 1980 | Robert Crilly (60) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Off duty reservist. Shot at his workplace, Main Street, Newtownbutler, County Fermanagh. |
| 04 January 1980 | Alexander Reid (20) Catholic Status: Civilian (Civ), Killed by: Ulster Defence Association (UDA) Found beaten to death in derelict garage, Berlin Street, Shankill, Belfast. |
| 06 January 1980 | Robert Smyth (18) Protestant Status: Ulster Defence Regiment (UDR), Killed by: Irish Republican Army (IRA) Killed in land mine attack on Ulster Defence Regiment (UDR) mobile patrol, near Castlewellan, County Down. |
| 06 January 1980 | James Cochrane (21) Catholic Status: Ulster Defence Regiment (UDR), Killed by: Irish Republican Army (IRA) Killed in land mine attack on Ulster Defence Regiment (UDR) mobile patrol, near Castlewellan, County Down. |
| 06 January 1980 | Richard Wilson (21) Protestant Status: Ulster Defence Regiment (UDR), Killed by: Irish Republican Army (IRA) Killed in land mine attack on Ulster Defence Regiment (UDR) mobile patrol, near Castlewellan, County Down. |
| 12 January 1980 | David Purse (33) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Shot while on Royal Ulster Constabualry (RUC) foot patrol, Seaview football ground, Shore Road, Belfast. |
| 12 January 1980 | Thomas Montgomery (64) Protestant Status: Civilian (Civ), Killed by: not known (nk) Died one day after being injured when crowd threw missiles at his Shankill black taxi, junction of Woodvale Road and Crumlin Road, Belfast. |
| 13 January 1980 | John Brown (47) Protestant Status: Civilian (Civ), Killed by: Irish National Liberation Army (INLA) Died seven months after being shot during armed robbery at his post office, Main Street, Blackwatertown, County Armagh. |
| 17 January 1980 | Mark Cochrane (17) Protestant Status: Civilian (Civ), Killed by: Irish Republican Army (IRA) Died in premature bomb explosion while travelling on train between Lisburn and Belfast, County Antrim. |
| 17 January 1980 | Abayoni Olorunda (35) nfNI Status: Civilian (Civ), Killed by: Irish Republican Army (IRA) Originally from Nigeria. Died in premature bomb explosion while travelling on train between Lisburn and Belfast, County Antrim. |
| 17 January 1980 | Kevin Delaney (26) Catholic Status: Irish Republican Army (IRA), Killed by: Irish Republican Army (IRA) Died in premature bomb explosion while travelling on train between Lisburn and Belfast, County Antrim. |
| 18 January 1980 | Graham Cox (35) Protestant Status: Prison Officer (PO), Killed by: Irish Republican Army (IRA) Shot while driving home from Magilligan Prison, Limavady Road, Stradreagh, near Derry. |
| 26 January 1980 | Errol Pryce (21) nfNI Status: British Army (BA), Killed by: Irish Republican Army (IRA) Shot by sniper while on British Army (BA) foot patrol, Whiterock Road, Ballymurphy, Belfast. |
| 02 February 1980 | William McAteer (40) Catholic Status: Civilian (Civ), Killed by: Ulster Volunteer Force (UVF) Shot while walking along Rugby Avenue, off Ormeau Road, Belfast. |
| 05 February 1980 | Aubrey Abercrombie (44) Protestant Status: Ulster Defence Regiment (UDR), Killed by: Irish Republican Army (IRA) Off duty. Shot at his farm, near Kinawley, County Fermanagh. |
| 08 February 1980 | Leonard Kaitcer (50) nfNI Status: Civilian (Civ), Killed by: not known (nk) Abducted from his home, Thornhill, Malone, Belfast. Found shot, Old Collin Road, off Glen Road, Belfast, on 9 February 1980. |
| 10 February 1980 | Hugh Maguire (9) Catholic Status: Civilian (Civ), Killed by: not known (nk) Killed during street disturbances, Springfield Road, Ballymurphy, Belfast. Confrontation between local people and British Army (BA) patrol. |
| 11 February 1980 | Joseph Rose (21) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Killed in land mine attack on Royal Ulster Constabulary (RUC) mobile patrol, Lisnaskea Road, near Rosslea, County Fermanagh. |
| 11 February 1980 | Winston Howe (35) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Killed in land mine attack on Royal Ulster Constabulary (RUC) mobile patrol, Lisnaskea Road, near Rosslea, County Fermanagh. |
| 14 February 1980 | John Morrow (37) Catholic Status: Civilian (Civ), Killed by: non-specific Loyalist group (LOY) Shot shortly after leaving Hatfield Bar, Ormeau Road, Belfast. |
| 16 February 1980 | Mark Coe (44) nfNIE Status: British Army (BA), Killed by: Irish Republican Army (IRA) Off duty British Army (BA) officer. Shot outside his home, Bielefeld, West Germany. |
| 29 February 1980 | Brendan McLaughlin (32) Catholic Status: Civilian (Civ), Killed by: Ulster Volunteer Force (UVF) Shot from passing car while walking along Clonard Street, Lower Falls, Belfast. Sinn Fein (SF) member intended target. |
| 06 March 1980 | Henry Livingstone (38) Protestant Status: ex-Ulster Defence Regiment (xUDR), Killed by: Irish Republican Army (IRA) Shot at his farm, Cortyna, near Tynan, County Armagh. |
| 15 March 1980 | John Bateman (18) nfNI Status: British Army (BA), Killed by: Irish Republican Army (IRA) Shot by sniper while on British Army (BA) foot patrol, Crossmaglen, County Armagh. |
| 21 March 1980 | Sean Walker (18) nfNI Status: British Army (BA), Killed by: Irish Republican Army (IRA) Died two weeks after being injured in remote controlled bomb attack on British Army (BA) foot patrol, Crossmaglen, County Armagh. |
| 31 March 1980 | Paul Moan (15) Catholic Status: Civilian (Civ), Killed by: British Army (BA) Shot while travelling in stolen car at British Army (BA) Vehicle Check Point (VCP), junction of Shaw's Road and Glen Road, Andersonstown, Belfast. |
| 01 April 1980 | Robert Carr (21) Catholic Status: Irish Republican Army (IRA), Killed by: Irish Republican Army (IRA) Died nine days after being injured in premature bomb explosion, Customs Office, Newry, County Down. |
| 02 April 1980 | Carl McParland (21) Catholic Status: Civilian (Civ), Killed by: Ulster Volunteer Force (UVF) Shot at his sister's home, Leoville Street, off Springfield Road, Belfast. |
| 04 April 1980 | Bernard Montgomery (33) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Off duty reservist. Shot at his workplace, Glenbank Industrial Estate, Ligoniel, Belfast. |
| 09 April 1980 | Stephen Magill (24) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Shot during gun attack on Royal Ulster Constabulary (RUC) mobile patrol, Stewartstown Road, Suffolk, Belfast. |
| 11 April 1980 | Fred Wilson (43) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Off duty reservist. Shot on his way to work, Franklin Street, Belfast. |
| 13 April 1980 | Mary Doherty (53) Catholic Status: Civilian (Civ), Killed by: British Army (BA) Shot while travelling in car approaching British Army (BA) Vehicle Check Point (VCP), Strabane, County Tyrone. |
| 15 April 1980 | David Livingstone (35) Protestant Status: Ulster Defence Association (UDA), Killed by: Ulster Defence Association (UDA) Killed in premature bomb explosion at his workplace, Connsbrook Filling Station, Connsbrook Avenue, Belfast. |
| 17 April 1980 | Victor Morrow (61) Protestant Status: ex-Ulster Defence Regiment (xUDR), Killed by: Irish Republican Army (IRA) Shot near to his home, Newtownbutler, County Fermanagh. |
| 25 April 1980 | Michael Madden (65) Catholic Status: Civilian (Civ), Killed by: Irish Republican Army (IRA) Shot at his home, Lenadoon Avenue, Belfast. Alleged informer. |
| 29 April 1980 | George Kerr (44) Protestant Status: Civilian (Civ), Killed by: non-specific Loyalist group (LOY) Shot at his home, Chadolly Street, off Newtownards Road, Belfast. |
| 02 May 1980 | Herbert Westmacott (28) nfNI Status: British Army (BA), Killed by: Irish Republican Army (IRA) Undercover British Army (BA) member. Shot during gun battle at house, Antrim Road, Belfast. |
| 11 May 1980 | Anthony Shields (57) Catholic Status: Civilian (Civ), Killed by: Irish Republican Army (IRA) Found shot near Crossmaglen, County Armagh. Alleged informer. |
| 14 May 1980 | Roy Hamilton (22) Protestant Status: Civilian (Civ), Killed by: non-specific Republican group (REP) Shot at his workplace, a building site, Ballymagroarty, Derry. |
| 04 June 1980 | John Turnly (44) Protestant Status: Civilian Political Activist (CivPA), Killed by: Ulster Defence Association (UDA) Irish Independence Party (IIP) member. Shot while travelling to political meeting, Carnlough, County Antrim. |
| 07 June 1980 | Richard Latimer (39) Protestant Status: Ulster Defence Regiment (UDR), Killed by: Irish Republican Army (IRA) Off duty. Shot at his shop, Main Street, Newtownbutler, County Fermanagh. |
| 13 June 1980 | Michael Wright (25) Protestant Status: Ulster Defence Association (UDA), Killed by: Ulster Defence Association (UDA) Killed in premature bomb explosion at community centre, Highfield Drive, Highfield, Belfast. |
| 26 June 1980 | Miriam Daly (45) Catholic Status: Civilian Political Activist (CivPA), Killed by: non-specific Loyalist group (LOY) Irish Republican Socialist Party (IRSP) member. Found shot at her home, Andersonstown Road, Andersonstown, Belfast. |
| 28 June 1980 | William Elliott (48) Protestant Status: ex-Ulster Defence Regiment (xUDR), Killed by: Irish Republican Army (IRA) From Northern Ireland. Shot at cattle mart, Ballybay, County Monaghan. |
| 01 July 1980 | Terence O'Neill (26) Catholic Status: Irish Republican Army (IRA), Killed by: Royal Ulster Constabulary (RUC) Shot while running away from Whiterock Community Centre, Ballymurphy, Belfast. |
| 19 July 1980 | Christopher Watson (20) nfNI Status: British Army (BA), Killed by: Irish Republican Army (IRA) Off duty. Shot while in Village Inn, Rosemount, Derry. |
| 24 July 1980 | Michael McCartan (16) Catholic Status: Civilian (Civ), Killed by: Royal Ulster Constabulary (RUC) Shot by undercover Royal Ulster Constabulary (RUC) member, in entry, off Dromara Street, Ormeau Road, Belfast. |
| 27 July 1980 | Robert Thompson (26) nfNI Status: British Army (BA), Killed by: Irish Republican Army (IRA) Killed by remote controlled bomb hidden in parked car, detonated when British Army (BA) foot patrol approached, Moy Bridge, near Aughnacloy, County Tyrone. |
| 03 August 1980 | William Clarke (59) Protestant Status: Ulster Defence Regiment (UDR), Killed by: Irish Republican Army (IRA) Off duty. Shot while travelling in his car along laneway, Gortnessy, near Pettigoe, County Donegal. |
| 09 August 1980 | James McCarron (19) Catholic Status: Civilian (Civ), Killed by: Irish National Liberation Army (INLA) Shot during sniper attack on British Army (BA) mobile patrol, Shaw's Road, Andersonstown, Belfast. |
| 09 August 1980 | Brian Brown (29) nfNI Status: British Army (BA), Killed by: Irish Republican Army (IRA) Killed by remote controlled bomb while on British Army (BA) foot patrol, near Forkhill British Army (BA) base, County Armagh. |
| 09 August 1980 | Michael Donnelly (21) Catholic Status: Civilian (Civ), Killed by: British Army (BA) Shot by plastic bullet at the junction of Leeson Street and Falls Road, Belfast. |
| 14 August 1980 | James Bell (24) Catholic Status: Civilian (Civ), Killed by: British Army (BA) Shot during attempted burglary of Greenvale Restaurant, Cookstown, County Tyrone |
| 15 August 1980 | William Younger (87) Protestant Status: Civilian (Civ), Killed by: not known (nk) Found shot and stabbed at his home, Wolfhill Avenue South, Ligoniel, Belfast. |
| 15 August 1980 | Letitia Younger (57) Protestant Status: Civilian (Civ), Killed by: not known (nk) Found shot and stabbed at her home, Wolfhill Avenue South, Ligoniel, Belfast. |
| 16 August 1980 | Colette Meek (47) Catholic Status: Civilian (Civ), Killed by: Irish Republican Army (IRA) Shot outside her home, during sniper attack on Royal Ulster Constabulary (RUC) mobile patrol, Alliance Avenue, Ardoyne, Belfast. |
| 24 August 1980 | Rodney McCormick (22) Catholic Status: Civilian Political Activist (CivPA), Killed by: Ulster Defence Association (UDA) Irish Republican Socialist Party member. Shot outside his home, Antiville, Larne, County Antrim. |
| 29 August 1980 | Frank McGrory (52) Catholic Status: Civilian (Civ), Killed by: Irish National Liberation Army (INLA) Killed when detonated booby trap bomb, hidden in hedgerow, Carnagh, near Keady, County Armagh. |
| 31 August 1980 | Wallace Allen (49) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Off duty reservist. Abducted while driving milk lorry, near Newtownhamilton, County Armagh. Found shot, Trainor's Bridge, near Newtownhamilton, County Armagh, on 12 September 1980. |
| 04 September 1980 | Ross Hearst (56) Protestant Status: Civilian (Civ), Killed by: Irish Republican Army (IRA) Abducted outside friend's home, Silver Stream, near Monaghan. Found shot several hours later, Wards Cross, near Middletown, County Armagh. |
| 23 September 1980 | Ernest Johnston (36) Protestant Status: Royal Ulster Constabulary (RUC), Killed by: Irish Republican Army (IRA) Off duty reservist. Shot while driving into the laneway of his home, near Rosslea, County Fermanagh. |
| 30 September 1980 | Robert Shields (44) Protestant Status: ex-Royal Ulster Constabulary (xRUC), Killed by: Irish Republican Army (IRA) Shot at his workplace, ambulance depot, Royal Victoria Hospital, Falls Road, Belfast. |
| 10 October 1980 | James Hewitt (48) Protestant Status: Ulster Defence Regiment (UDR), Killed by: Irish Republican Army (IRA) Off duty. Killed by booby trap bomb attached to his car parked at cattle mart, Tandragee Road, Portadown, County Armagh. |
| 13 October 1980 | Seamus Quaid (42) nfNIRI Status: Garda Siochana (GS), Killed by: Irish Republican Army (IRA) Shot during exchange of gunfire, shortly after stopping vehicle while on Garda mobile patrol, Ballyconnick, near Cleariestown, County Wexford. |
| 15 October 1980 | Ronnie Bunting (32) Protestant Status: Irish National Liberation Army (INLA), Killed by: Ulster Freedom Fighters (UFF) Shot at his home, Downfine Gardens, Turf Lodge, Belfast. |
| 15 October 1980 | Noel Little (44) Catholic Status: Irish National Liberation Army (INLA), Killed by: Ulster Freedom Fighters (UFF) Shot at Ronnie Bunting's home, Downfine Gardens, Turf Lodge, Belfast. |
| 11 November 1980 | Owen McQuade (31) nfNI Status: British Army (BA), Killed by: Irish Republican Army (IRA) Shot while sitting in stationary British Army (BA) minibus, main driveway of Altnagelvin Hospital, Derry. |
| 12 November 1980 | Oliver Walsh (39) Catholic Status: Civilian (Civ), Killed by: Irish Republican Army (IRA) Killed by land mine while travelling in his car, Lislea, near Camlough, County Armagh. Mistaken for undercover Royal Ulster Constabulary (RUC) mobile patrol. |
| 14 November 1980 | Peter Valente (33) Catholic Status: Irish Republican Army (IRA), Killed by: Irish Republican Army (IRA) Found shot in entry, off Highfield Drive, Highfield, Belfast. Alleged informer. |
| 19 November 1980 | Thomas Orr (38) Protestant Status: Civilian (Civ), Killed by: Irish National Liberation Army (INLA) Shot outside his workplace, Ulster Bank, Boucher Road, Belfast. |
| 26 November 1980 | Norman Donaldson (59) Protestant Status: Ulster Defence Regiment (UDR), Killed by: Irish Republican Army (IRA) Shot while leaving Royal Ulster Constabulary (RUC) base, Derrygonnelly, County Fermanagh. |
| 10 December 1980 | Colin Quinn (19) Protestant Status: Ulster Defence Regiment (UDR), Killed by: Irish National Liberation Army (INLA) Off duty. Shot shortly after leaving his workplace, Fox Row, off Durham Street, Belfast. |
| 27 December 1980 | Heather Pollock (53) Protestant Status: Civilian (Civ), Killed by: Irish Republican Army (IRA) Died three weeks after being shot in her home during sniper attack on Royal Ulster Constabulary (RUC) mobile patrol, Strabane, County Tyrone. |
| 28 December 1980 | Hugh McGinn (40) Catholic Status: British Army Territorial Army (TA), Killed by: Irish National Liberation Army (INLA) Off duty. Shot outside his home, Umgola Villas, Umgola, near Armagh. |
| 30 December 1980 | William Burns (45) Protestant Status: Prison Officer (PO), Killed by: Ulster Volunteer Force (UVF) Off duty. Shot shortly after leaving his home, Knocknagoney Park, Belfast. |
| 31 December 1980 | William Stephenson (50) Protestant Status: Civilian (Civ), Killed by: not known (nk) Died six days after being injured when hit on head by missile thrown during street disturbances outside his home, Newtownards Road, Belfast. |