William Barton Northrup

William Barton Northrup KC
5th Clerk of the House of Commons
In office March 1918 – December 1924
Preceded by	Thomas Barnard Flint
Succeeded by	Arthur Beauchesne
Member of the Canadian Parliament for Hastings East
In office 1900–1917
Preceded by	Jeremiah M. Hurley
Succeeded by	Thomas Henry Thompson
In office 1892–1896
Preceded by	Samuel Barton Burdett
Succeeded by	Jeremiah M. Hurley
Personal details
Born	(1856-10-19)October 19, 1856 Belleville, Canada West
Died	November 22, 1925(1925-11-22) (aged 69)
Political party	Conservative
Alma mater	University of Toronto
Profession	Lawyer

William Barton Northrup, KC (October 19, 1856 – October 22, 1925) was a Canadian lawyer and politician.

Born in Belleville, Canada West, the son of Anson Gilbert Northrup and Jane C. Balster, Northrup was educated at the Upper Canada College and the University of Toronto, where he received a Bachelor of Arts degree in 1877 and a Master of Arts degree in 1878. A lawyer he was head of the firm of Northrup & Roberts, in Belleville. He was created a King's Counsel in 1903.

He first ran unsuccessfully as the Conservative candidate for the House of Commons of Canada for the Ontario electoral district of Hastings East in the 1891 federal election losing to Liberal Samuel Barton Burdett. After Burdett died in office in 1892, Northrup was acclaimed in the resulting 1892 by-election. He was defeated in the 1896 federal election and was elected in 1900, 1904, 1908, and 1911.

From 1918 to 1924, he was the Clerk of the House of Commons.