The crash happened at the Moy Road area of Armagh on Thursday, December 27.
Sergeant Shannon said: “Shortly before 5.15am, it was reported that a pedestrian had been struck by a car in the area.
“The man died as a result of his injuries.”
The Moy Road was closed at the Drumcairn Road and Cabragh Road but has now re-opened.
“Enquiries are ongoing and we would appeal to anyone who witnessed the incident or who may have dash-cam footage available to contact police on 101, quoting reference number 447 27/12/18,” added Sgt Shannon.