Another passenger of the car is being treated for serious injuries.
Three people have been killed in a crash in Carlow.
The driver and two passengers of the car died in the single vehicle collision on the N80 Wexford Road shortly before midnight last night.
Another passenger, a man in his 20s, has been taken to St Luke's General Hospital in Kilkenny with serious but non-life threatening injuries.
Gardaí say the road will be closed for a few hours as Forensic Collision Investigators examine the scene.
They are appealing for any witnesses to this collision to come forward.
Any road users who may have camera footage and were travelling on the N80 at Leagh between 11:15pm and midnight are asked to make this footage available to Gardaí.
Anyone with any information is asked to contact Carlow Garda station on 059 913 6620, the Garda Confidential Line 1800 666 111, or any Garda station.
Speaking in Brussels, Taoiseach Leo Varadkar expressed his sadness at the news: