The woman – who has yet to be identified – was pronounced dead at the scene after she was hit by a car on the Wexford to Rosslare Road at Drinagh at about half past one this morning.
The driver of the car – a 21-year-old man – was uninjured.
The road is closed and diversions are in place.
Meanwhile, in a separate collision, a 22 year old man was killed when his car crashed into a ditch on the N25 at Gaulstown, Glenmore in Kilkenny just outside Waterford city at around 3 o'clock this morning.
He was rushed to Waterford General Hospital where he was pronounced dead a short time later.
The road is closed between Glenmore and Slieverue for a forensic examination.
