Christopher Joseph Bittle MP (born February 17, 1979) is a Canadian Liberal politician who was elected to represent the riding of St. Catharines in the House of Commons of Canada in the 2015 federal election. He currently serves as the Parliamentary Secretary to the Minister of Environment and Climate Change, sitting on the Standing Committee on Environment and Sustainable Development. He previously served as Parliamentary Secretary to the Minister of Transport and as Deputy House Leader of the Government. Bittle is the youngest MP to hold the Deputy House Leader position in the House of Commons.