Mary Willard

Mary Willard may refer to:
 * Mary Bannister Willard (1841–1912), American editor, temperance worker, and educator
 * Mary Louisa Willard (1898–1993), American forensic scientist
 * Mary Thompson Hill Willard (1805–1892), American teacher and social reformer
 * Patsy Willard (Mary Patricia Willard) (born 1941), American former diver