Mary Stanislaus MacCarthy

Sister Mary Stanislaus MacCarthy (1849–1897) was an Irish poet and nun.

MacCarthy was a daughter of poet Denis Florence MacCarthy, who wrote as "Desmond of The Nation".

She was born in Blackrock, County Dublin, studied at St. Catherine's Dominican Convent, Sion Hill, Blackrock, and joined the community in 1869.