• Kate Barclay - Australian Kayaker - Athens Olympics 2004 6th LK4 500m
• David and Frederick Barclay, British businessmen
• Eddie Barclay, French music producer
• Florence Louisa Barclay (1862 - 1921), English romance novelist and short story writer.
• Humphrey Barclay (born 1941), comedy executive and producer.
• James Barclay, High Fantasy author
• Joan Barclay (Geraine Greear) (1914 - 2002), actress
• John Barclay, several people of that name
• Michael Andreas Barclay de Tolly (1761 - 1818), a Russian Field Marshal and Minister of War
• Olivia Barclay, an influential horary astrologer
• Paris Barclay, an American television and film director
• Reginald Barclay, a character from Star Trek: The Next Generation
• Robert Barclay (1648 – 1690), an influential Quaker theologian
• Sir Robert Barclay, Baronet
• Sir Robert Barclay, 8th Baronet MP for Newtown 1802-1807
• Robert Heriot Barclay (1786 – 1837). He was a British naval officer
• Thomas Henry Barclay, (1753 – 1830), American lawyer
• Thomas Swain Barclay, Stanford professor
• William Barclay, several people of that name
• Bocephus Barclay, bassist for the rock band Halo Ape
• Steve Barclay, BAFTA winning and RTS nominated documentary editor

See also

• Barkley
• Berkeley