Thomas Bain (14 December 1834 – 18 January 1915) was a Scottish born Canadian parliamentarian.

They settled on a bush farm in Wentworth County near Hamilton, Ontario.

He was re-elected on six subsequent occasions, serving as an MP for 28 years before retiring in 1900.

[1] When the Speaker of the House of Commons of Canada, James David Edgar, died unexpectedly in July 1899, Wilfrid Laurier asked Bain to become the new Speaker for the remainder of Egar's term.

[citation needed] Bain served as Speaker until the House was dissolved for the 1900 election in which he did not run.