Anthony Kingwell, 39, was last seen by staff at the open prison early on Friday morning (March 5), while serving a four-year sentence for burglary.
He is described by police as white, 5ft 8ins tall, of average build, clean shaven with green eyes and brown hair.
He has links to Worthing, Brighton and Ashford, in Kent.
Anyone who sees him is advised not to approach him, but should call 101 quoting serial 519 of 05/03.
You can also contact the independent charity Crimestoppers anonymously on 0800 555 111 or report it to them online.