Kieran Tierney (born 5 June 1997) is a Scottish professional footballer who plays for Scottish Premiership side Celtic and the Scotland national team as a left back. Born on the Isle of Man, Tierney moved to Lanarkshire at a young age. He came through the Celtic youth system and made his first team debut in April 2015, and his full international debut in March 2016.
Born in Douglas on the Isle of Man, Tierney moved to Wishaw in Scotland aged 10 months. He supported Celtic as a child and signed for the club when he was 7 years old. He was educated at Motherwell schools St Brendan's RC Primary and Our Lady's High (one year group behind fellow footballers, twins Nicky and Chris Cadden) then attended St Ninian's High School, Kirkintilloch, which has a development partnership with Celtic. He has spoken of his hope of emulating the late Tommy Gemmell, a member of the Lisbon Lions team who also grew up in Wishaw (specifically, Craigneuk) and played in the same position.