Megan Roberts, aged 20 and a student at York St John University, was reported missing by her mother at 8.30am on Monday 27 January 2014, after a friend had raised concerns for her having not heard from her following a night out in York city centre.
Megan, who is originally from Wetherby, has not been seen since around 2am on Thursday 23 January 2014 in Popworld, on George Hudson Street having gone out for the evening with friends on Wednesday 22 January.
Nobody has heard from Megan since, which is very out of character and officers are very concerned for her safety.
Megan is described as around 5ft 6in tall, of medium build with long dark brown hair. When she was last seen she was wearing a cream knee length dress which had large brown and orange flowers on it and black plimsoll type shoes.
Police are appealing for anyone who has seen Megan since the early hours of Thursday morning or knows where she is now, to contact them urgently.
They are also appealing to Megan herself to contact her friends, family or the police to let them know she is safe.
Anyone with any information is asked to contact North Yorkshire Police on 101, select option 1 and pass information to the Force Control Room.