Senators 12 / 21
John Norvell (1789)
John P. Hale (1806)
John P. Jones (1829)
John Page (1787)
John Porter East (1931)
John Randolph of Roanoke (1773)
John Ruggles (1789)
John S. Wells (1803)
John Sharp Williams (1854)
John Slidell (1793)
John Sloss Hobart (1738)
John Sparkman (1899)
John Thune (1961)
John Tower (1925)
John V. Tunney (1934)
John W. Kern (1849)
John W. Thomas (1874)
Johnny Isakson (1944)
Jonathan Bourne Jr. (1855)
Jonathan Roberts (1771)
Jonathan Ross (1826)
Jorge Colazo (1954)
José Avelino (1890)
José David Name (1968)
José Name Terán (1936)
Joseph Cilley (1791)
Joseph H. Ball (1905)
Joseph I. France (1873)
Joseph Lafayette Rawlins (1850)
Joseph M. Dixon (1867)
Joseph M. McCormick (1877)
Joseph N. Dolph (1835)
Joseph R. Underwood (1791)
Joseph R. West (1822)
Joseph S. Clark Jr. (1901)
Joseph Simon (1851)
Joseph Tydings (1928)
Joshua B. Lee (1892)