UDW most commonly refers to University of Durban-Westville, a former university in South Africa
UDW may also refer to
User data words, the "payload" of the ancillary data packet in the context of television Independent Drolshagen Voters' Association (German: ), a political grouping on Drolshagen Town Council. Uduwara railway station, on the Main Line (Sri Lanka) (station code: UDW)