Prince de Ligne Mountains ({{Coord|72|20|S|31|14|E||display=inline,title}}) is a small group of mountains rising to 2,285 m, standing 10 nautical miles (18 km) north of the Belgica Mountains in the Sor Rondane Mountains in Queen Maud Land, Antarctica. Discovered by the Belgian Antarctic Expedition (1957–1958), under G. de Gerlache, who named them for Prince Antoine de Ligne, pilot and photographer with the expedition.

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