The man received serious injuries after the incident in Rathfarnham
Gardaí are appealing for witnesses after a fatal road traffic collision in Dublin.
The collision involved a male cyclist aged in his 50s and a car on at Butterfield Park in Rathfarnham.
The cyclist received serious injuries at around 8.10am on Monday and was taken to Tallaght Hospital.
He was pronounced dead on Monday night as a result of his injuries.
Garda Forensic Collision Investigators examined the scene and the local Coroner has been notified.
Investigating gardaí are appealing for anyone with information to contact Rathfarnham garda station on 01-666-6500, the Garda Confidential Line at 1800-666-111 or any garda station.