Richard Bartles, 29, has not been seen since he left his family home on Jaeger Close in Derbyshire at around 5pm on Sunday 3rd March.
His disappearance is completely out of character and he has not contacted his family since.
Mr Bartles is around 5ft 10in tall, of medium build, with short dark hair. He was last seen wearing a blue hooded jumper with an ‘Iron Man’ logo, blue jeans and grey trainers.
Officers believe Mr Bartles may have been in Nottingham and Lincolnshire in the last few days and are liaising with police in those areas as part of the search to find him.
Mr Bartles, or anyone with any information about his whereabouts, is asked to contact Derbyshire police using the non-emergency number 101.