Mary Howard
Mary Howard may refer to:
- Mary FitzRoy, Duchess of Richmond and Somerset, née Lady Mary Howard, lady-in-waiting, wife of Henry Fitzroy, daughter of the 3rd Duke of Norfolk and daughter-in-law of Henry VIII
- Mary FitzAlan, Duchess of Norfolk, whose married name was Mary Howard
- Mary Howard, of the Holy Cross, English nun
- Mary Howard, Duchess of Norfolk , British peer
- Maria Howard, Duchess of Norfolk, British noblewoman, known as Mary
- Mary Scott, Countess of Deloraine, British courtier and royal governess
- Mary Howard, Duchess of Norfolk , British noblewoman after whom Norfolk Island was named
- Mary Howard, pseudonym of American politician Mary E. Woolley Chamberlain
- Mary Howard , British romantic novelist
- Mary Shipman Howard, recording engineer and recording studio owner
- Mary Howard de Liagre, American actress usually credited as Mary Howard
- Mary Howard, fictional character in the 1941 film When Ladies Meet
- Mary Howard , Vermont state legislator