Jack Douglas Lloyd is being sought by police after he absconded from HMP Sudbury on Friday 29 November.
The 34-year-old, who is white, slim, 5ft 10ins tall and has brown eyes, was convicted at Manchester Crown Court in 2016 to serve nine years for a number of robberies and possessing an imitation firearm.
His home address is in Hyde but he has connections to Ashton-under-Lyne, Glossop and Manchester.
Anyone who sees Lloyd or knows of his whereabouts is asked not to approach him but to contact us using the following methods, quoting reference 19*640491.
• Facebook – send us a private message to this page
• Twitter – direct message our contact centre on @DerPolContact
• Website – complete the online contact form www.derbyshire.police.uk/Contact-Us
• Phone – call us on 101
You can also call Crimestoppers anonymously on 0800 555 111.
Please note in the event of an emergency you should always call 999.