Officers are concerned for the safety of a 17-year-old who could be heading to Mansfield.
Aiden Tyler was reported missing from the Clifton area at around 4:30pm on June 28.
A police spokesman said: "Aiden is originally from Mansfield and will probably be heading back there."
Aiden is described as white, of medium build and is around 5ft 7ins tall.
He is described as having cropped fair hair and was last seen wearing light grey hogging bottoms, black trainers and a red Nike t-shirt.
If you have seen Aiden or have any information about his whereabouts, please contact Nottinghamshire Police on 101, quoting incident number 1015 of 28 June 2018.