Thomas Hamilton (11 January 1784 – 24 February 1858) was a Scottish architect, based in Edinburgh where he designed many of that city's prominent buildings. Born in Glasgow, his works include: the Burns Monument in Alloway; the Royal High School on the south side of Calton Hill (long considered as a possible home for the Scottish Parliament); the Royal College of Physicians of Edinburgh; the George IV Bridge, which spans the Cowgate; the Dean Orphan Hospital, now the Dean Gallery; the New North Road Free Church, now the Bedlam Theatre; Cumstoun, a private house in Dumfries and Galloway; and the Scottish Political Martyrs' Monument in Old Calton Cemetery, Edinburgh.