Thomas Barclay
Thomas Barclay may refer to:
- Thomas Barclay , Scottish jurist, professor at Toulouse and Poitiers
- Thomas Barclay , American merchant, consul, diplomat
- Thomas Henry Barclay, New York lawyer, American loyalist, British official
- Thomas Barclay , minister in the Church of Scotland and Principal of the University of Glasgow
- Thomas Barclay , British missionary to Formosa
- Thomas Barclay , British Liberal Party MP for Blackburn 1910
- Thomas Swain Barclay, professor of political science at Stanford University