David Sweet (born June 24, 1957) is a former Canadian politician who served as a Member of Parliament (MP) from 2006 to 2021. He represented the riding of Ancaster—Dundas—Flamborough—Westdale from 2006 to 2015 and, following the 2012 federal electoral district redistribution, he represented the riding of Flamborough—Glanbrook from 2015 to 2021. A member of the Conservative Party, he served as the Shadow Minister for International Rights and Religious Freedom from 2019 to 2020. Throughout his tenure, Sweet served as chair and vice chair for a number of committees. During the 42nd Canadian Parliament, he served as the chair of the Conservative Party's parliamentary national caucus.