The 3rd Canadian Parliament was in session from March 26, 1874, until August 17, 1878.

The membership was set by the 1874 federal election on January 22, 1874.

It was controlled by a Liberal Party majority under Prime Minister Alexander Mackenzie and the 2nd Canadian Ministry.

The Official Opposition was the Conservative/Liberal-Conservative, first led by Sir John A. Macdonald.

22 MPs recontested their seats in byelections, and were reelected Twelve MPs recontested their seats in byelections, and were reelected: