31-year-old Tung Tze Koh was last seen at a residence in Dawes Drive, Buderim on Monday afternoon.
Police hold concerns for his welfare as he suffers from a medical condition.
Mr Koh is described as Asian, approximately 172cm tall with a slim build, short cropped black hair and a thin moustache.
He was last seen wearing a black or navy shirt, possibly with a motif on the front or back, black sports shorts and black and green sandals.
Anyone with information regarding his whereabouts is urged to contact Crime Stoppers on 1800 333 000.
* Please note - the man's appearance has changed since the picture was taken. He no longer has a goatee beard and his hair is now cropped shorter.
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