Paris Purdue was last seen in the Watling Street area at around 9.20am on Tuesday 18 June 2024.
The 18-year-old is described as around 5ft, 6ins tall with brown hair and brown eyes.
She was wearing a long-sleeved grey top, grey sports leggings and white trainers when last seen.
It is believed she may be driving a red Mini with black stripes on the bonnet and is thought to have travelled to the Thanet area.
Officers are concerned for her welfare and urge anyone who has seen her to call 999 quoting reference 18-0884.
