17-year-old Akvile Lenciauskaite has been missing from her home in Cork since Saturday 31 October 2015.
Akvile is described as being 1m 70cm (5ft 6in) tall, of slim build with long black hair and green eyes.
She waas in fancy dress for Halloween when last seen, and was wearing a black and white dress, black and white striped tights with black high heels and was carrying a large pink handbag.
Gardai are asking anyone with information regarding Akvile’s whereabouts to contact Togher Garda Station on 021 4947120, The Garda Confidential Telephone Line 1800 666 111 or any Garda Station.