Lincolnshire Police have issued an appeal to trace 14-year-old Gabreale Sommerford from the Monks Road area of Lincoln.
Gabreale was reported missing on the morning of Wednesday, July 29.
She was last seen at around 6am and is described as having blonde hair with blue streaks in it.
She is around 5ft 3in in height, and is believed to be wearing a blue navy coat with fur on the hood, jeans, and carrying a cream or white medium-sized suitcase.
Anyone that has seen Gabreale, or knows where she might be, should contact Lincolnshire Police on 101 quoting incident 115 of July 29.
The Lincoln teen is the second young girl to have been reported as missing in Lincolnshire this week.
Police have also issued an appeal to find 15-year-old Daisy Dale from Gainsborough.