Andrew Routledge, 39, hasn’t been seen since leaving his home in York on Friday.
Officers believe Andrew may be in Scarborough and are asking anyone who has seen him to get in touch.
Andrew is described as a white man of medium build with a tanned complexion. He has short dark brown/greying hair, a brown beard and wears glasses.
When he was last seen, Andrew was wearing a t-shirt, black jeans, hooded zip up top with white stripes on it and white rim trainers.
He might be carrying a backpack and he could be travelling around in a black Fiat Punto.
Anyone who thinks they might have seen Andrew or who has any information is asked to contact police.
Dial 101, press 1 and pass information to the Force Control room.