John Thomas Squire (born 24 November 1962 in Broadheath, Altrincham, Cheshire) is an English musician, songwriter and artist.

Squire is best known as the guitarist for The Stone Roses, a rock band in which he formed a songwriting partnership with lead singer Ian Brown. After leaving The Stone Roses he went on to found The Seahorses and has since released two solo albums. Squire is also an accomplished painter and announced in 2007 that he was giving up music for good to fully commit to painting.

As a contemporary of Johnny Marr of The Smiths, Squire was amongst the most accomplished British rock guitarists of the 1980s, known for his chiming melodies, spiraling riffs and live solos. He was voted the 13th greatest guitarist of the last 30 years in a national 2010 BBC poll.

Squire grew up on Sylvan Avenue in Timperley, round the corner from Ian Brown, and after attending Heyes Lane Junior School, he passed the eleven plus exam and went on to attend Altrincham Grammar School for Boys. He excelled at art as a child. He formed a close friendship with Ian Brown during their last two years at school, the two bonding over a shared love for punk rock, particularly The Clash.