The 1950 Montreal Alouettes was the fifth season for the franchise as they competed in the Interprovincial Rugby Football Union, the highest level of play in eastern Canada.

[1] The Alouettes signed tackle Jim Ambrose from the Quebec Senior Football League before the start of the regular season.

[2] [3] By late August, head coach Lew Hayman publicly stated that the Alouettes were performing more poorly than they had the previous season.

Hayman hoped to fill those roster spots with American players, but he also pointed to a "lack of drive" from the team to explain their two preseason losses.

[1] Their poor performance was partially blamed on injuries, a situation which worsened when former all-star halfback John Harper suffered a dislocated shoulder in a late September exhibition game against the McGill Redmen.