This is a list of past and present members of the Senate of Canada representing the province of Manitoba. Manitoba can be represented by up to six senators, but this was not always the case. Stipulated in the Manitoba Act of 1870, the province was first represented by two senators, then to increase incrementally based on population, when the population reached 75,000 it would then be represented by a maximum of four senators. The Constitution Act of 1915 added two more senate seats for Manitoba, bringing the total to six.