Police are appealing for public assistance to help locate 40-year-old Mernda man Kris Nash.

Kris was last seen at his home address on Riverdale Boulevard about 4.30pm on Saturday.

Police and family members hold concerns for his welfare as his disappearance is out of character.

Kris may be driving a silver 2018 Mazda 3, registration AYQ-381.

Police have released an image of Kris in the hope someone can provide information on his whereabouts.

Anyone who sees Kris or has information on his whereabouts is urged to contact Epping Police Station on 9409 8100.