The woman was in her 70s.
A truck and a pedestrian collided at approximately 12pm on September 27.
Gardaí are investigating the incident which occurred on Main St, Carrickmacross in County Monaghan.
The victim, a female pedestrian was fatally injured in the collision and pronounced dead at the scene.
She was taken to Our Lady of Lourdes Hospital where a post-mortem examination will take place.
Diversions are in place and the road will remain closed for technical examination by Forensic Collision Investigators at scene.
Gardaí are appealing to witnesses to contact Carrickmacross Garda Station on 042 9690190, the Garda Confidential Line 1800-666-111 or any Garda station.