Have you seen 53-year-old Frederick King?
Police said he has absconded from Ford Prison while serving a five-year sentence for burglary.
King, from Hailsham, was jailed after committing a burglary in the town in August 2013.
He was reported to Sussex Police as having absconded from Ford at 6pm on October 1.
Officers have been searching and making inquiries to try to trace King since then.
King has links to Hailsham, Polegate and Eastbourne but could be elsewhere in the county or may have left Sussex.
Inspector Tony Wakefield said: “We are determined to catch and arrest King.
“There is no evidence that he has committed further crimes since he left Ford or is any threat to the public but we need to recapture him so that he serves the remainder of his sentence.
“We are grateful to the media and the public for any help and information they give us.”
Anyone with information should email firstname.lastname@example.org quoting serial 1214 of 01/10, call 101 or contact the independent charity Crimestoppers anonymously on 0800 555111.