Arthur Withy (1870–1943) was a New Zealand journalist and political activist.
Born in England in 1870, Withy arrived in New Zealand in 1884. He was a journalist and prominent single-taxer (i.e. a land tax) and follower of Henry George. He was Secretary of the New Zealand Land Values League.
Arthur Withy was a Liberal Party (UK) candidate for South Herefordshire in the United Kingdom in 1895 and a candidate for the New Zealand Liberal Party for the Parnell electorate in 1896. He was a member of the United Labour Party National Executive 1912-13 and an Independent Labour candidate for Auckland East in 1911.
Arthur Withy died in 1943.
Withy's father Edward Withy had been a shipbuilder in Bristol, England until he emigrated to New Zealand in 1884. He represented Newton in the New Zealand Parliament from 1887 to 1890.
Labour's Path to Political Independence: the Origins and Establishment of the NZLP 1900-19 by Barry Gustafson (1980, Oxford University Press, Auckland)