Operation Flavius (also referred to as the Gibraltar killings) was a military operation in which three members of the Provisional Irish Republican Army (IRA) were shot dead by the British Special Air Service (SAS) in Gibraltar on 6 March 1988. The trio were believed to be planning a car bomb attack on British military personnel in Gibraltar. They were shot dead while leaving the territory, having parked a car. All three were found to be unarmed, and no bomb was discovered in the car, leading to accusations that the British government had conspired to murder them. An inquest in Gibraltar ruled that the authorities had acted lawfully but the European Court of Human Rights held that, although there had been no conspiracy, the planning and control of the operation was so flawed as to make the use of lethal force almost inevitable. The deaths were the first in a chain of violent events in a fourteen-day period. On 16 March, the funeral of the three IRA members was attacked, leaving three mourners dead. At the funeral of one, two British soldiers were killed after driving into the procession in error.

In late 1987, British authorities became aware of an IRA plan to detonate a bomb outside the governor's residence in Gibraltar. On the day of the shootings, known IRA member Seán Savage was seen parking a car near the assembly area for the parade; fellow members Daniel McCann and Mairéad Farrell were seen crossing the border shortly afterwards. As SAS personnel moved to intercept the three, Savage split from McCann and Farrell and ran south. Two soldiers pursued Savage while two others approached McCann and Farrell. The soldiers reported seeing the IRA members make threatening movements when challenged, so the soldiers shot them multiple times. All three were found to be unarmed, and Savage's car did not contain a bomb, though a second car, containing explosives, was later found in Spain. Two months after the shootings, the documentary "Death on the Rock" was broadcast on British television. Using reconstructions and eyewitness accounts, it presented the possibility that the three IRA members had been unlawfully killed.

The inquest into the deaths began in September 1988. The authorities stated that the IRA team had been tracked to Málaga, where they were lost by the Spanish police, and that the three did not re-emerge until Savage was seen parking his car in Gibraltar. The soldiers testified that they believed the suspected bombers had been reaching for weapons or a remote detonator. Several eyewitnesses recalled seeing the three shot without warning, with their hands up, or while they were on the ground. One witness, who told "Death on the Rock" he saw a soldier fire at Savage repeatedly while he was on the ground, retracted his statement at the inquest, prompting an inquiry into the programme which largely vindicated it. The inquest returned a verdict of lawful killing. Dissatisfied, the families took the case to the European Court of Human Rights. Delivering its judgement in 1995, the court found that the operation had been in violation of Article 2 of the European Convention on Human Rights as the authorities' failure to arrest the suspects at the border, combined with the information given to the soldiers, rendered the use of lethal force almost inevitable. The decision is cited as a landmark case in the use of force by the state.