Sebastian Michalak was last seen on the morning of Friday 17 June in Ochrewell Avenue. He has not been seen since then and has not made any contact with his family or friends.
Mr Michalak is described as a Polish white male, 6ft tall and of medium build. He lives and works in the Huddersfield and Batley areas.
Detective Inspector Mark Colman, of Kirklees CID, said: “Sebastian has left his wallet and personal belongings at home and has not been heard from for a number of days. This is out of character for Sebastian and his family and police are concerned for his welfare.
“We would ask anyone who has seen Sebastian or with information about his whereabouts to please contact the police.
“Similarly, we would ask Sebastian himself to make contact either with the police or his family to confirm that he is safe and well.”
Anyone with information is asked to contact Kirklees CID or Adult Safeguarding Unit via 101.