Roland Kuru was last seen at around 11pm on Monday at his home address in the Clifton area of the town.
When his family woke up this morning, he was not at home and he has not been seen or heard from since.
Mr Kuru, who is Slovakian, is described as being around 5ft 9ins tall, with a dark complexion and short black hair.
Officers and family members are growing increasingly concerned for Roland’s welfare and ask that anyone who has seen him, or knows where he might be, to get in touch.
Contact South Yorkshire Police on 101 quoting incident number 244 of 5 July 2016.