Sinclaire is a surname. Notable people with the name include:
Breanna Sinclairé (born c. 1991), American transgender singer Bratt Sinclaire, Italian Eurobeat/Italo disco producer Frederick Sinclaire (1881–1954), New Zealand Unitarian minister, pacifist, social critic, university professor and essayist Nikki Sinclaire (born 1968), British politician Stephanie Sinclaire (born 1954), also known as Stephanie Crawford, is a painter and director in theatre and film William Sinclaire, American polo player
See also Elexis Sinclaire, is a fictional character in the SiN first-person shooter video game series by Ritual Entertainmen Sinclair