Mary Watson may refer to: Mary Watson (chemist) (1856–1933), British chemist Mary Watson (pioneer) (1860–1881), Australian folk heroine Mary Watson (author) (fl. 2000s), South African author Mrs Watson (Mary Morstan), Mary, wife of Dr Watson, Sherlock Holmes character Mary Jane Watson, Spider-Man character Mary Jo Watson, Seminole art historian Mary Spencer Watson (1913–2006), English sculptor