Vancouver https://www.lonsdaleleather.com/leather
Vancouver Upholstery leather https://www.vanvilleleather.com/products
Longview Leather, south of Calgary AB http://www.longviewleather.com/
OA Leather Supply, Saskatoon SK on FaceBook
Buckskin Leather with locations in Nanaimo, Calgary, and Edmonton https://www.buckskinleather.com/
And there was another here in Calgary that I can't find at the moment.
Edmonton https://www.halfordsmailorder.com/hides-leather-and-fur
Nanaimo might be the best option for you to check out.
Tom