Cornerpost Peak is a peak, 2,160 metres (7,100 ft) high, at the southeast end of Leitch Massif in the Concord Mountains, Victoria Land, Antarctica. The topographical feature was so named by the northern party of the New Zealand Federated Mountain Clubs Antarctic Expedition (NZFMCAE), 1962–63, because they established their most northerly survey station here on the turning point of their traverse.