James O'Sullivan may refer to: James O'Sullivan (bishop) (1834–1915), Irish Anglican bishop James O'Sullivan (defence storekeeper) (1855–1925), New Zealand Army Officer James O'Sullivan (politician) (1867–1921), member of the Queensland Legislative Assembly Jimmie O'Sullivan (1883–1960), New Zealand rugby union player James O'Sullivan (academic) (born 1986), Irish writer, publisher, and academic