Oakbank is an unincorporated community in Manitoba, Canada located about 15 km east of the provincial capital Winnipeg, in the Rural Municipality of Springfield. It has a population of about 5,000, making it the largest unincorporated community in the province of Manitoba. Starting off as a small, largely rural community, Oakbank is now a dormitory town, or bedroom community, for Winnipeg, as a majority of the residents work in that city.