Hello Everyone, Are you searching how to activate your BMO credit card, BMO Master Card, BMO Debit Card, BMO Harris Card, BMO spc Card, BMO gift card, etc. Well, if you are a fresh cardholder and you haven’t know how bmo card activation card then you have the right place. In this article, I give you proper guidance and method for that. The Bank of Montréal, or BMO, is a leading lender in providing revolving lines of credit. With nearly $600 billion in assets, BMO is one of the largest bakes in all of Canada. If you are ready to activate your BMO MasterCard, then here is what you need to do.