In Montreal, the common languages spoken by Eastern Europeans vary depending on the specific ethnic groups and their respective countries of origin. However, some of the most commonly spoken languages among Eastern European communities in Montreal include:

• Polish: Montreal is home to a significant Polish community, and Polish is widely spoken among its members. Polish cultural centers, churches, and community organizations often host events and provide services in the Polish language.
• Ukrainian: Ukrainian is another prevalent language spoken by Eastern Europeans in Montreal, particularly among the Ukrainian community. Ukrainian churches, schools, and cultural associations contribute to the preservation and promotion of the Ukrainian language and culture in the city.
• Russian: Russian is spoken by many immigrants from Russia, as well as other Eastern European countries where Russian is commonly used. Russian-speaking communities in Montreal often have their own cultural institutions, media outlets, and social networks.

• Romanian: Montreal is home to a vibrant Romanian community, and Romanian is spoken by members of this community. Romanian cultural events, churches, and organizations play a role in maintaining the language and cultural identity of Romanian immigrants in the city.
• Hungarian: Hungarian-speaking communities can also be found in Montreal, with Hungarian immigrants contributing to the linguistic and cultural diversity of the city. Hungarian cultural centers and events provide opportunities for Hungarian speakers to connect and celebrate their heritage.
• Moldavian (Moldovan): Moldavian, which is closely related to Romanian, is spoken by immigrants from Moldova and other parts of Eastern Europe. While Moldavian speakers may also communicate in Romanian, they contribute to the linguistic diversity of Montreal's Eastern European communities.

These languages, along with others such as Czech, Slovak, and Bulgarian, represent the diverse linguistic landscape of Eastern European communities in Montreal, reflecting the rich cultural heritage they bring to the city.