The paper argues that the relatively recent term "multicultural theatre" has not only been ambiguous but also mixed up with the concept of "intercultural" and "ethnic" theatre in Canadian theatre criticism. Ever since it became a declared national policy, multiculturalism has basically referred to a pluralistic society and culture made up by a number of ethnic groups. In terms of the theatre, it means that Canadian theatre may be regarded multicultural primarily because, in addition to the dominating English- and French-language component, it is further enriched by a number of ethnic theatre companies which have traditionally performed plays in their own language for their own communities. To support his argument, the author offers a case study of the contributions of Hungarian ethnic theatres and individuals to the development of modem Canadian theatre.