I'm doing 3-year UG course of B.Sc in CS, is there any chance to study Masters in Canada, Australia or Europe?

Canadian universities accepts 16 years of education I. e. 10+2+4. But you can apply for Canadian colleges which accepts 15 years education. You can go for pathway programme through college and them apply to the university. The requirement is the very good academic score and IELTS / TOEFL is required