KDR

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
 * Kill-death ratio, a statistic in player-versus-player combat multiplayer video games
 * Coalition for the Republic, a defunct Polish political party