Mary Ruth Polak (born 1967 or 1968) is a Canadian politician, who served as a Member of the Legislative Assembly of British Columbia (MLA) for the riding of Langley from 2005 to 2020. She was re-elected to the Legislative Assembly of British Columbia in 2017, having represented the constituents of Langley since 2005 and was appointed Minister of Health on June 12, 2017 by Premier Christy Clark. Prior to her new cabinet post, she served as the Minister of the Environment, Minister of Transportation and Infrastructure, Minister of Aboriginal Relations and Reconciliation, Minister of Children and Family Development and Minister Responsible for Child Care, Minister of Healthy Living and Sport, and Parliamentary Secretary to the Minister of Health for the Conversation on Health. Before being el