KDR may refer to: Kappa Delta Rho, an American college fraternity The ISO 639-3 code for the Karaim language Kinase insert domain receptor, a human protein Short distance radio or KDR 444, Norway and Sweden KDR, IATA airport code of Kandrian Airport in Papua New Guinea Knockdown resistance of insects to pesticides Radioplane KDR Quail, 1940s US target drone aircraft