FDU may refer to:
Bandundu Airport, in the Democratic Republic of the Congo Fairleigh Dickinson University, in New Jersey, United States FDU materials, a class of structured mesoporous polymers Firemen and Deckhands' Union of New South Wales, an Australian trade union Fudan University, in Shanghai, China Führer der Unterseeboote, a naval office of the German Empire during World War I United Democratic Forces (Benin) (French: ), a political alliance in Benin United Democratic Forces of Rwanda (French: ), a political alliance in Rwanda Faculty of Dramatic Arts (Serbian: ), a faculty in Serbia