Sir Roy Emile Jack (12 January 1914 – 24 December 1977) was a New Zealand politician of the National Party.

Jack was a Judge's Associate from 1935–1938, before enlisting with the Royal New Zealand Air Force during World War Two.

[3] The Waimarino electorate became Rangitikei because of post-census boundary changes before the 1972 election, and though a sitting MP he was challenged by Ruth Richardson (who he had advised about a career in politics).

George Chapman who chaired the selection said that "the tensions were tremendous, but Roy was finally confirmed as the candidate.

[5] In the 1970 Queen's Birthday Honours, Jack was appointed a Knight Bachelor, for outstanding services as Speaker of the House of Representatives.