Family and friends of Nicholas Luchetta hold serious concerns for his wellbeing as he has not made contact with them since October 11.
Mr Luchetta (pictured) is described as being Caucasian, 190cm tall with a proportionate build, tanned complexion, short brown hair and blue eyes.
It is believed he suffers from a medical condition.
Anyone with information in regards to his whereabouts or any other information which could assist in the investigation is urged to contact Airlie Beach Police on 4948 8888 or Crime Stoppers on 1800 555 000.
Anyone with information which could assist with this matter should contact Crime Stoppers anonymously via 1800 333 000 or crimestoppers.com.au 24hrs a day.
Crime Stoppers is a registered charity and community volunteer organisation working in partnership with the Queensland Police Service.