Police are appealing for public assistance to help locate 41-year-old Steven Markey, who was last seen in Mermaid Waters on Monday July 11.
Mr Markey (pictured) was last seen at an address on Salacia Avenue and has not been seen by family or friends since.
Police hold concerns for his welfare as he has a medical condition.
He is described as Caucasian, approximately 170cm tall, of an average build with short red hair.
Steven may be travelling in a white 2004 Toyota Hilux with Queensland registration 098-HYX (similar to pictured).
If anyone has seen Mr Markey or knows of his current whereabouts they are asked to contact police.
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.
For all non-urgent police reporting or general police inquiries contact Policelink on 131 444 or Policelink.qld.gov.au 24hrs a day.