An elderly man has died after being hit by a truck in a Wollongong car park.

Emergency services were called to a car park in Corrimal about 10am following reports a pedestrian had been hit by a truck.

The man in his 70s was killed at the scene.

The 27-year-old truck driver was treated for shock at the scene before undergoing mandatory testing.

Police are investigating, and are urging anyone with information to come forward.

AAP