William Saint-Clair
William Saint Clair
may refer to:
William St. Clair
(1410–1484 aka
William Sinclair
), 1st Earl of Caithness
William St Clair of Roslin
(1700–1778), of the Clan Sinclair, 21st Baron of Roslin
William St Clair
(1937–2021), British historian
William St Clair Grant
(1894–1918), Scottish rugby player
William St. Clair Tisdall
(1859–1928), Anglican priest