Thomas Peter Lantos (born Tamás Péter Lantos; February 1, 1928 – February 11, 2008) was a Hungarian-born American politician who served as a U.S.

representative from California from 1981 until his death in 2008. A member of the Democratic Party, he represented the state's 11th congressional district until 1993, and from then the 12th congressional district, which both included the northern two-thirds of San Mateo County and a portion of the southwestern part of San Francisco after redistricting. Lantos, who served as Chair of the House Foreign Affairs Committee in his last term, announced in early January 2008 that he would not run for re-election because of cancer of the esophagus.