SDU
SDU is an abbreviation for:
- Danish youth organizations in South Schleswig
- Rio de Janeiro -Santos Dumont ( Aeroporto Santos Dumont airport), one of two airports in the Brazilian city of Rio de Janeiro after the IATA code
- Service Data Unit, data packets in network traffic
- Social Democratic Union, several European parties
- Social Democratic Union, a former German Party
- University of Southern Denmark, a Danish University of composite
- Surveillance Detection Unit, an American intelligence organization
Sdu stands for:
- Sdu, a Dutch publishing company and service company, consisting of the former state-owned enterprises Staatsdrukkerij en Uitgeverij ( State Printing and publishing ) emerged
- Disambiguation
- Abbreviation