David Adam Smith is an American politician and retired attorney serving as the U.S. representative for Washington's 9th congressional district. A member of the Democratic Party, Smith previously served in the Washington State Senate.

Washington's 9th congressional district encompasses a long, somewhat narrow area in Western Washington, through the densely populated central Puget Sound region, from Auburn and Federal Way in the south to parts of Seattle and Bellevue in the north. Since 1997, the 9th district has been represented in the U.S. House of Representatives by Adam Smith, a Democrat from Bellevue.