Lincolnshire Police are appealing for help to find Thomas Coates, who has not had contact with family since July 4.
The 32-year-old has links to the Lincoln, East Lindsey and West Lindsey areas.
Thomas is described as white, slim, with collar-length brown curly hair. He also has a beard.
Contact Lincolnshire Police if you know of Thomas’s whereabouts
• By emailing firstname.lastname@example.org - including Thomas’s name in the subject box.
• By calling the non-emergency number 101 or by calling or text Missing People on 116 000.