The Irish National Liberation Army exploded a time bomb in Ballykelly, Northern Ireland, killing eleven British Army soldiers and six civilians.

The Irish National Liberation Army is an Irish republican socialist paramilitary group formed on 8 December 1974, during the 30-year period of conflict known as "the Troubles". The group seeks to remove Northern Ireland from the United Kingdom and create a socialist republic encompassing all of Ireland. With membership estimated at 80–100 at their peak, it is the paramilitary wing of the Irish Republican Socialist Party (IRSP).

The Droppin Well bombing or Ballykelly bombing occurred on 6 December 1982, when the Irish National Liberation Army (INLA) detonated a time bomb at a disco in Ballykelly, County Londonderry, Northern Ireland, United Kingdom. The disco, known as the Droppin Well, was targeted because it was frequented by British Army soldiers from nearby Shackleton Barracks. The bomb killed 17 people: eleven soldiers and six civilians, while dozens more were wounded. It was the deadliest attack during the INLA's paramilitary campaign and one of the deadliest bombings of The Troubles.

Ballykelly is a village and townland in County Londonderry, Northern Ireland. It lies 3 miles (4.8 km) west of Limavady on the main Derry to Limavady A2 road and is 15 miles (24 km) east of Derry. It is designated as a Large Village and in 2021 the population of Ballykelly was 2,004. It lies within Causeway Coast and Glens district.