Constance Sheares (born 4 October 1941) is a Singaporean arts administrator, curator, and writer. Sheares helped establish the National Museum Art Gallery in 1976, curating its inaugural exhibition and other major exhibitions. Through exhibitions, publications, and acquisitions initiated at the Museum, Sheares helped to shape the basis of art institutions and art historical discourse in Singapore. She was a curator at the National Museum of Singapore between 1971 and 1976, and 1982 to 1988, and later an independent curator and consultant for various organisations.