This is a timeline of actions by the Ulster Defence Association (UDA), a loyalist paramilitary group formed in 1971. Most of these actions took place during the conflict known as "the Troubles" in Northern Ireland. The UDA's declared goal was to defend Loyalist areas from attack and to combat Irish republican paramilitaries. However, most of its victims were Irish Catholic civilians, who were often chosen at random. It used the name Ulster Freedom Fighters (UFF) when it wished to claim responsibility for its attacks and avoid political embarrassment, as the UDA was a legal organisation for much of its history. The UFF usually claimed that those targeted were Provisional Irish Republican Army members or IRA sympathizers. Other times, attacks on Catholic civilians were claimed as "retaliation" for IRA actions, since the IRA drew most of its support from Catholics. Such retaliation was seen as both collective punishment and an attempt to weaken the IRA's support. However, during 1972 the organisation openly claimed responsibility for several gun and bomb attacks using the UDA title.

1970s

1971

1972

January–June

July

August–October

November–December

1973

1974

1975

1976

1977

1978

1979

1980s

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990s

1990

1991

1992

1993

1994

1996

1997

1998

1999

2000s

2000

2001

2002

2003

2004

2005

2006

2007

2009

2010s

2010

2012

2017

2020s

2020

2021

2022