<p>The Multicultural Ideology Scale has been revised (MCI-r) and its psychometric properties are tested across different socio-political contexts. The MCI-r is comprised of six domains: Cultural Maintenance, Equity/Inclusion, Social Interaction, Essentialistic Boundaries, Extent of Differences, and Consequences of Diversity. This study is a part of a larger international research project, examining the validity of the MCI-r in Canada. The results of our study supported a six-factor model for the MCI-r. However, we suggest removing Essentialistic Boundaries and Extent of Differences as they do not align with multicultural ideology and affect the interpretation and application of the model. Further analyses confirmed discriminant validity for the majority of the subscales; however, ideal convergent validity was not reached for all the subscales but one (Equity/Inclusion). Sufficient reliability was established for all the subscales. The examination of the association of the six components of the MCI-r with tolerance, intergroup contact, attitudes toward different ethnocultural groups, and intercultural ideology revealed that the four subscales of Cultural Maintenance, Equity/Inclusion, Social Interaction, and Consequences of Diversity were positively related to these variables. However, the association of Essentialistic Boundaries and Extent of Differences with tolerance was negative. We further found a negative relationship between the Essentialistic Boundaries dimension and interculturalism ideology. These results further support the argument that Essentialistic Boundaries and Extent of Differences may promote fixed, essentialist views of cultural groups that contrast with the flexible, inclusive nature inherent to the principles of multiculturalism.</p>