Sir George Thomas Smart (10 May 1776 – 23 February 1867) was an English musician. Smart was born in London, his father being a music-seller. He was a choir-boy at the Chapel Royal, and was educated in music, becoming an expert violinist, organist, teacher of singing and conductor. He taught for many years at the Royal Academy of Music where his notable pupils included Elizabeth Greenfield, John Orlando Parry, Mary Shaw, and Willoughby Weiss. In 1811 he was knighted by the Lord Lieutenant of Ireland, having conducted a number of successful concerts in Dublin. On 1 April 1822 he was appointed organist at the Chapel Royal.