UCW may refer to:
- UCW: Understanding Children's Work, a joint ILO, UNICEF, World Bank programme
- Union Carriage & Wagon, a rolling stock manufacturer in South Africa
- Union of Communication Workers
- Unit Control Word, a construct in the channels of IBM mainframes
- University of Worcester, formerly University College Worcester
- Aberystwyth University, formerly University College of Wales
- University Canada West
- United Campus Workers, an affiliate of the Communications Workers of America organizing higher education workers in the state of Tennessee.