James William Bain
Member of the Canadian Parliament for Soulanges
In office 1883–1891
Preceded by	G.R.L. de Beaujeu
Succeeded by	Joseph Octave Mousseau
In office 1892–1896
Preceded by	Joseph Octave Mousseau
Succeeded by	Augustin Bourbonnais
Personal details
Born	22 June 1838 St. Polycarpe, Lower Canada
Died	27 October 1909
Political party	Conservative
Profession	merchant

James William Bain (22 June 1838 – 27 October 1909) was a Canadian politician and merchant. He was elected to the House of Commons of Canada in 1883 as a Member of the historical Conservative Party in the riding of Soulanges after Georges-Raoul-Léotale-Guichart-Humbert Saveuse de Beaujeu was unseated in a by-election. That election was later declared void on 15 January 1884, however, in a by-election held 5 February 1885, he was acclaimed to Soulanges. He won the election of 1887 and lost to his opponent, Joseph Octave Mousseau in the following election of 1891. Another by-election was held on 3 February 1892 after the votes in the previous election were declared void. He won this by-election and again the election was declared void on 11 November 1892 and yet again he won another by-election on 13 December 1892.