Police are appealing for information on Teagan Ward (16) who has been missing since Friday January 15.
Police said Teagan's family is growing increasingly concerned for her welfare.
The teenager is described as being approximately five feet two inches tall, of slim to average build with light brown, waist length hair with blonde highlights. Teagan was last seen at approximately 2.15pm on Friday January 15 in Ballymena. She was wearing a dark grey Gym King tracksuit consisting of a crop jumper and jogging bottoms.
Police said Teagan could be in Ennis, Co Clare.
Anyone with information can contact police at Ballymena on the non-emergency number 101, quoting reference 871 15/01/21.