Mauzac-et-Grand-Castang, a commune in the Dordogne department in Aquitaine in southwestern France
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Veronica Castang (1938—1988), British film, stage and television actress
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Jeanne-Germaine Castang (1878-1897), French nun, Sister Marie-Céline of the Presentation, beatified in 2007
Castang was beatified on September 16 2007 at the Cathedral of Bordeaux, in the presence of Cardinal Jean-Pierre Ricard, special envoy of the Pope, Archbishop of Bordeaux and President of the Conference of Bishops of France.