Shane Stroughton absconded from HMP Sudbury on Tuesday, February 23.
He was sentenced at Nottingham Crown Court in July 2008 and was serving an indeterminate sentence for grevious bodily harm.
He is described as white, 5ft 8ins tall, medium build, he has a shaved head and a scar on the top of his head.
He has links to Kirkby-in-Ashfield.
'World’s best sweet shop’ contents up for auction as Peak District owner sells everything to start new adventure
Buxton B&B set to become children's home if High Peak council approves plans
Police 'extremely concerned' for welfare of man missing after walking from Stockport to Ashover
Fire service renews safety warning as new heatwave looms in Derbyshire
Air ambulance scrambled to crash on Derbyshire’s Snake Pass – amid fears of serious injuries to casualty
Anyone who knows of his whereabouts or sees him should contact police on 101.