Sdu or SDU may refer to:
Communications Satellite Data Unit, a part of a satellite telecommunication system for aircraft Service Data Unit, a telecommunications term related to the layered protocol concept
Universities University of Southern Denmark, Danish: Syddansk Universitet (SDU) Süleyman Demirel University, a university in Isparta, Turkey Suleyman Demirel University, a university in Almaty, Kazakhstan Shandong University (山东大学 SDU), a university in Shandong, China Sanda University (上海杉达学院 SDU), a university in Shanghai, China
Other Single dwelling unit, a single-family, free-standing residential building (home). It is defined in opposition to a multi-family residential dwelling (e.g. apartment). Special Detective Unit, a specialist branch of the Garda Síochána, Ireland's national police Special Duties Unit, a paramilitary special force of the Hong Kong Police Force Surveillance Detection Unit, a surveillance program connected to US embassies. Santos Dumont Airport, the smaller of the two airports in Rio de Janeiro, Brazil (IATA code) SDU: Sex Duties Unit, a 2013 Hong Kong action comedy film Social Development Unit, a matchmaking agency in Singapore Social Democratic Union (disambiguation), a name of a number of political parties Sonic Diver Unit, special mecha unit piloted by the Sky Girls (Japanese anime) Sodium diuranate, a uranium salt that is an intermediate in the production of the metal Sdu (publishing company), a Dutch publishing company, formerly the Staatsdrukkerij en Uitgeverij Sweden Democratic Youth, the former youth league of the Swedish political party Sweden Democrats State Disbursement Unit, a government agency in the United States that handles child support payments NHS Sustainable Development Unit in the United Kingdom