William Van Ness Bay served as a Representative from Missouri in the United States Congress from 1849 to 1851. A member of the Democratic Party, William Van Ness Bay contributed to the legislative process during 1 term in office.

William Van Ness Bay’s service in Congress occurred during a significant period in American history. As a member of the House of Representatives, William Van Ness Bay participated in the democratic process and represented the interests of constituents, helping to shape the laws and policies that governed the nation.