The Guildford Four and Maguire Seven were two groups of people, mostly Irish, who were wrongly convicted in English courts in 1975 and 1976 for the Guildford pub bombings of 5 October 1974, and the Woolwich pub bombing of 7 November 1974. All the convictions were eventually quashed after long campaigns for justice, and the cases, along with those of the Birmingham Six, diminished public confidence in the integrity of the English criminal justice system.

The Guildford pub bombings occurred on 5 October 1974 when the Provisional Irish Republican Army (IRA) detonated two 6-pound (2.7-kilogram) gelignite bombs at two pubs in Guildford, Surrey, England. The pubs were targeted because they were popular with British Army personnel stationed at Pirbright barracks. Four soldiers and one civilian were killed. Sixty-five people were wounded.