Jamie Lea McCall, from Kilwinning, was last seen in her hometown at around 3pm on Monday, August 1.
Police are now appealing for help tracing the teen, after the 14-year-old failed to return home and was reported as missing.
Investigators have said she is known to visit areas across Ayrshire, as well as being a common face in the Four Corners area of Glasgow's city centre.
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She is described as being approximately 5ft 6in tall, with a slim build and dyed black hair with green eyes.
Jamie was last seen wearing a pink hoodie, black leggings and white Converse trainers.
A statement from Police Scotland reads: “If you have seen Jamie Lea or have any information as to her whereabouts please contact us and quote incident number 0154 of 02/08/22.”
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