Gardai in Youghal, County Cork are investigating the fatal road traffic collision which occurred on the N25 at approximately 5.15am this morning.
A 33-year-old male pedestrian was struck by a car while walking along the road on the Cork side of Castlemartyr, Gardai said.
Emergency services were called and he was rushed by ambulance to Cork University Hospital (CUH).
However, he was pronounced dead a short time later.
The driver of the car was uninjured.
The road is currently closed to facilitate an examination by Garda Forensic Collision Investigators and diversions are in place at the Two Mile Inn and in Castlemartyr village via Mogeely.
Witnesses are asked to contact Midleton Garda Station on 021- 4621550, the Garda Confidential Telephone Line 1800 666 111 or any Garda Station.
Earlier this weekend, six people were injured in a car crash in Balbriggan in north Dublin.
Six women, aged between 18 and 23 years of age, were hospitalised after the car they were travelling in hit a tree on Saturday.
Phibsboro Fire Brigade said that all six passengers were taken to hospital, and that three passengers were taken to hospital on spinal boards as a precaution.
In another accident a man had to be cut from a car that rolled down an embankment outside the Royal Yacht Club in Dun Laoghaire.
Emergency services were called to the scene yesterday morning and members of the Dublin Fire Brigade had to cut the roof off the car to free the driver.