William Nevins Armstrong (March 10, 1835 – October 16, 1905), aka Nevins Armstrong and aka W. N. Armstrong, was the Attorney General of Hawaii during the reign of King David Kalākaua. He is most widely known outside of Hawaii for the book Around the World with a King, his insider account of King Kalākaua's world tour in 1881. He was born in Lahaina on the island of Maui, the third of ten children of missionaries Clarissa Chapman Armstrong and Richard Armstrong, who later served as the second kahu (pastor) of Kawaiahaʻo Church, and subsequently was appointed President of the Board of Education for the Kingdom of Hawaii.