Mary Boyle

• Mary Boyle, British clinical psychologist
• Mary Boyle, Countess of Cork and Orrery, British literary hostess
• Mary O. Boyle, American politician of the Ohio Democratic party
• Mary Boyle O'Reilly, American social reformer, clubwoman, and journalist
• Mary Boyle, six-year-old girl who went missing in County Donegal, Ireland in 1977