Arthur Pyne O'Callaghan (1 March 1837 – 17 December 1930) was a 19th-century Member of Parliament from Canterbury, New Zealand.
He was born in Fermoy, Ireland, on 1 March 1837.He represented the Lincoln electorate from 1881 to 1888, when he resigned.O'Callaghan died in Eketahuna on 17 December 1930, and was buried at Mangaoranga Eketahuna Cemetery.