Smith Peninsula is an ice-covered, "dog-legged" peninsula  long and wide, extending in an easterly direction between Keller and Nantucket Inlets on the east coast of Palmer Land. The peninsula was photographed from the air in December 1940 by members of the United States Antarctic Service (USAS), and in 1947 by members of the Ronne Antarctic Research Expedition (RARE) under Ronne, who in conjunction with the Falkland Islands Dependencies Survey (FIDS) charted it from the ground. Named by Ronne for Walter Smith, ship's mate, navigator, and trail man with Ronne's expedition.