Mystery surrounds the identity of a man who was admitted into a Melbourne hospital weeks ago and police are now appealing for the public's help.

The man did not have a wallet or any identifying documents with him when he arrived at hospital, police said.

Police are appealing for public assistance to help identify a man who was admitted into a Melbourne hospital some weeks ago. Credit:Victoria Police

Hospital staff have so far been unable to communicate with him to establish his identity or access his medical history to ensure he receives appropriate care.

He is of average height and build with grey hair, blue eyes and a full beard.

An image of the man has been released in the hope someone recognises him.

Anyone who has information about the identity of this man is urged to contact Southbank Police Station on 8635 0900.