Wilhelm Traub (2 April 1910 – 18 February 1946) was a German Nazi SS-Obersturmbannführer who, during the Second World War, served as the occupation administrator of the Navahrudak (today, Novogrudok) area of the Generalbezirk Weissruthenien, and as the SS and Police Leader of "Quarnero" (Kvarner Gulf) based in Fiume (today, Rijeka). After the war ended, he died in captivity in Yugoslavia in 1946.