1889 78 are killed in the Armagh rail disaster near Armagh in what is now Northern Ireland.
1910 The hull of the {{RMS|Olympic}}, sister-ship to the ill-fated {{RMS|Titanic}}, is launched from the Harland and Wolff shipyard in Belfast, Northern Ireland.
1921 Belfast's Bloody Sunday: 16 people are killed and 161 houses destroyed during rioting and gun battles in Belfast, Northern Ireland.
1932 Bad weather forces Amelia Earhart to land in a pasture in Derry, Northern Ireland, and she thereby becomes the first woman to fly solo across the Atlantic Ocean.
1941 In the Belfast Blitz, two-hundred bombers of the German Air Force (Luftwaffe) attack Belfast, Northern Ireland killing one thousand people.
1942 World War II: The first United States forces arrive in Europe landing in Northern Ireland.
1966 The Ulster Volunteer Force declares war on the Irish Republican Army in Northern Ireland.
1969 Members of the Royal Ulster Constabulary damage property and assault occupants in the Bogside in Derry, Northern Ireland. In response, residents erect barricades and establish Free Derry.
1969 Violence erupts after the Apprentice Boys of Derry march in Derry, Northern Ireland, resulting in a three-day communal riot known as the Battle of the Bogside.
1969 British troops are deployed in Northern Ireland.
1970 The Troubles: the "Falls Curfew" begins in Belfast, Northern Ireland.
1971 Internment in Northern Ireland: British security forces arrest hundreds of nationalists and detain them without trial in Long Kesh prison. Twenty people die in the riots that follow.
1971 McGurk's Bar bombing: An Ulster Volunteer Force bomb kills 15 civilians and wounds 17 in Belfast, Northern Ireland.
1972 Bloody Sunday: British Paratroopers kill fourteen unarmed civil rights/anti internment marchers in Northern Ireland.
1972 The United Kingdom imposes direct rule over Northern Ireland.
1972 Operation Motorman: British troops move into the no-go areas of Belfast and Derry, Northern Ireland. End of Free Derry.
1973 Elections are held for the Northern Ireland Assembly, which will lead to power-sharing between unionists and nationalists in Northern Ireland for the first time.
1974 Northern Ireland's power-sharing Sunningdale Agreement collapses following a general strike by loyalists.
1975 The Troubles: three members of a popular cabaret band and two gunmen are killed during a botched paramilitary attack in Northern Ireland (see Miami Showband killings).
1976 The Northern Ireland Constitutional Convention is formally dissolved in Northern Ireland resulting in direct rule of Northern Ireland from London via the British parliament.
1976 The Northern Ireland Constitutional Convention is formally dissolved in Northern Ireland resulting in direct rule of Northern Ireland from London via the British parliament.
1978 The European Court of Human Rights finds the United Kingdom government guilty of mistreating prisoners in Northern Ireland, but not guilty of torture.
1979 An IRA bomb kills British World War II admiral Louis Mountbatten, 1st Earl Mountbatten of Burma and 3 others while they are boating on holiday in Sligo, Republic of Ireland. Another bomb near Warrenpoint, Northern Ireland kills 18 British soldiers.
1981 The Hunger Strike by Provisional Irish Republican Army and Irish National Liberation Army prisoners at the Maze Prison in Northern Ireland ends after seven months and ten deaths.
1982 Droppin Well bombing: The Irish National Liberation Army detonate a bomb in Ballykelly, Northern Ireland, killing eleven British soldiers and six civilians.
1987 The Loughgall ambush: The SAS kills 8 IRA members and 1 civilian, in Loughgall, Northern Ireland.
1987 Remembrance Day Bombing: A Provisional IRA bomb explodes in Enniskillen, Northern Ireland during a ceremony honouring those who had died in wars involving British forces. Twelve people are killed and sixty-three wounded.
1989 Attack on Derryard checkpoint: The Provisional Irish Republican Army launch an attack on a British Army permanent vehicle checkpoint near Rosslea, Northern Ireland. Two British soldiers are killed and one badly wounded.
1993 Greysteel massacre: The Ulster Freedom Fighters, a loyalist terrorist group, open fire on a crowded bar in Greysteel, Northern Ireland. Eight civilians are killed and thirteen wounded.
1994 The Troubles: the Ulster Volunteer Force (UVF) open fire inside a pub in Loughinisland, Northern Ireland, killing six civilians and wounding five.
1995 U.S. President Bill Clinton became the first President to visit Northern Ireland.
1996 Peace talks begin in Northern Ireland without the participation of Sinn Féin.
1997 Protestant paramilitary leader Billy Wright is assassinated in Northern Ireland.
1998 The Good Friday Agreement is accepted in a referendum in Northern Ireland with 75% voting yes.
1998 Omagh bomb in Northern Ireland, the worst terrorist incident of The Troubles
1999 The United Kingdom devolves political power in Northern Ireland to the Northern Ireland Executive.
2002 ''Tullaghmurray Lass'' sinks off the coast of Kilkeel, County Down, Northern Ireland killing three members of the same family on board.
2005 The Provisional Irish Republican Army calls an end to its thirty year long armed campaign in Northern Ireland.
2007 Operation Banner, the presence of the British Army in Northern Ireland, and the longest-running British Army operation ever, comes to an end.