SDJ

SDJ may mean:
 * Democratic Farmers League of Sweden (Swedish: Sverges demokratiska jordbrukareförbund)
 * Sendai Airport, Natori, Miyagi, Japan
 * Seven Day Jesus, a Christian rock band
 * School District of Janesville, Janesville, Wisconsin, United States
 * Suundi language, a Bantu language
 * Sammy Davis Jr., American singer and entertainer

SdJ may mean:
 * Spiel des Jahres, an annual board game design prize