What is the largest casino in Canada? October 29, 2019 12:13 am by Tom Wilson A What is the largest casino in Canada? Casino de Montréal is the largest with a whopping 526,488 sq. ft. gaming floor (No Ratings Yet)Loading... PREVIOUS ARTICLE What is the minimum age required to enter a Casino? Author: Tom Wilson Chief editor and creator, Tom drives the direction of CanadianCasinos.ca with the goal to provide the best and most honest resource for online gambling enthusiasts in Canada