Theunis Petrus De Bruin was reported missing recently at the Boksburg North Police Station.
He was reported missing by his mother Alet Smit, who lives in Klopper Park, and he was last seen at about 1pm in Boksburg (where he was living) on June 2.
The clothes he was wearing at the time of his disappearance are unknown.
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Theunis is 23 years old with a slim build, brown eyes and brown hair.
He is about 1.8m tall and weighs about 70kg.
Alet believes he may be in the Primrose area and might be in the Makause informal settlement.
Anyone with information about his whereabouts can contact the Boksburg North SAPS on 011 898 3000/09/10 or Alet on 064 139 2445.