Polonia is an unincorporated community in the Rural Municipality of Rosedale in Manitoba, Canada.

In 1921, in response to the influx of Poles, the name was changed to Polonia, the Latin form of Poland.

These 38 families were recruited from the eastern mining region of Pennsylvania and were of Hungarian, Slovak and Czech extraction.

By the end of 1885, 17 colonists representing 43 individuals had filed homestead entries and began to work the land.

[5] After 1895 with the death of de Döry, most of the original colonists would leave, being replaced by Polish settlers.