The September 1982 Rentería attack was an ambush by the Basque separatist organisation ETA which occurred on 14 September 1982 on the motorway near the Basque town of Errenteria (Spanish: Rentería) in Guipuzkoa. The targets were several national police officers, four of whom were killed in the attack, with the fifth seriously injured. The attack was ETA's deadliest of 1982.