Oshawa City Council is the governing body of the city of Oshawa, Ontario. The council has 11 members, consisting of 10 councillors plus the mayor. Prior to 1985, city councillors were elected at large, with "regional and city" councillors who would serve on both city council and the Durham Region council, and "local city" councillors who would only serve on city council. From 1985-2010, the city moved to a ward-based system, ensuring equal representation for all residents. The city would return to at large elections in 2010 and 2014, before abandoning the failed idea and returning to a ward-based system in 2018, with five wards which each elect one city councillor and one "regional and city" councillor.