Henry Bruce Wright Armstrong (27 July 1844 – 4 December 1943) was a Northern Irish barrister and politician, Unionist Member of Parliament (MP) for Mid Armagh from June 1921 until 1922.

Born in Sholden, Henry Bruce Armstrong was the second surviving son of William Jones Wright Armstrong of County Armagh and Frances Elizabeth, widow of Sir Michael McCreagh, and daughter of Major Christopher Wilson.

[1] He was educated at The Royal School, Armagh and Trinity College, Cambridge, gaining a BA (2nd Class Law Tripos) in 1867 and an MA in 1870.

Vice-Lieutenant of County Armagh in 1920, he was a Senator of Queen's University Belfast from 1920 to 1937.

[1] He was returned unopposed to the Imperial House of Commons for Mid-Armagh in a by-election in 1921, at the advanced age of 76, becoming one of the oldest first-time MPs whose birth date is recorded.