- Sir Alexander Mackenzie (Explorer)
- Sir Alexander Mackenzie (Railway Magnate)
- Sir Alexander Tilloch Galt
- Sir Alfred Bishop Morine
- Sir Allan Napier MacNab
- Sir Ambrose Shea
- Sir Andrew Macphail
- Sir Andrew Thomas Taylor
- Sir Antoine-Aimé Dorion
- Sir Archibald Cameron Macdonell
- Sir Archibald Campbell
- Sir Arthur Currie
- Sir Arthur George Doughty
- Sir Brenton Halliburton
- Sir Byron Edmund Walker
