Gwent Police is looking for 44-year-old Alex Livingstone from Llanbradach, after he breached the terms of his early release licence from prison.
Livingstone had been serving a four-month prison sentence for theft, but he was released on licence on Monday, February 15.
Anyone with information on the whereabouts of Livingstone can call Gwent Police on 101 quoting 143 17/02/16 or Crimestoppers anonymously on 0800 555 111.