Mary Beaumont

Mary Beaumont may refer to:


 * Mary Lawson (actress) (1910–1941), English stage and film actress, married name Beaumont
 * Mary Beaumont (author) (1849–1910), Victorian author
 * Mary Beaumont (died 1632), created Mary Villiers, Countess of Buckingham in her own right
 * Mary Beaumont Welch (1841–1923), American educator and suffragist