Sophia Aggelonitis is a Canadian businesswoman and former politician. She was a Liberal member of the Legislative Assembly of Ontario who represented the riding of Hamilton Mountain from 2007 to 2011. She served as the province's Minister of Revenue and Minister Responsible for Seniors in the Liberal government of Premier Dalton McGuinty.

Hamilton Mountain is a provincial electoral district in Ontario, Canada, that has been represented in the Legislative Assembly of Ontario since 1967. The riding is located in the Hamilton, Ontario region.