By customer
- ubank
- Uberlândia Refrescos
- UGF Assicurazioni
- UK Dept for Work and Pensions
- UK Ministry of Justice
- UNICEF Netherlands
- UniCredit Group
- Unilever
- UNIMINUTO
- Unique Express
- UnitedHealth Group
- United States Department of Agriculture
- United States Senate
- United Stationers
- Universitair Ziekenhuis Antwerpen (UZA)
- Universitätsklinikum Erlangen
- Universität Wien
- University Hospitals Birmingham
- University of Adelaide
- University of Arizona
- University of Arkansas
- University of Bari
- University of Calgary
- University of California – Office of the President
- University of Cincinnati
- University of East Anglia
- University of Florida
- University of Hamburg Physics Department (PHYSnet)
- University of London
- University of Maryland, Baltimore County (UMBC)
- University of North Carolina UNC
- University of North Carolina
- University of Oklahoma
- University of Palermo
- University of Pittsburgh
- University of Sheffield
- University of Southampton
- University of Southern California Annenberg Innovation Lab
- University of Southern California, Annenberg Innovation Lab
- University of Telecommunications Leipzig
- University of Toronto
- University of Western Sydney
- University of Wisconsin Milwaukee
- University of Wollongong
- Unum
- UPG
- UPMC (University of Pittsburgh Medical Center)
- UPMC
- Uponor
- Ural Mining and Metallurgical Company (UGMK)
- Uratex
- US-based communications company
- US-based investment services company
- US Cellular
- U.S. Coast Guard’s Aviation Logistics Center
- US college
- U.S. Department of Justice
- US Foods
- U.S. healthcare plan
- US Lumber Group
- US Tennis Association – US Open Tennis Championships
- US university
- Utility Provider
- Uttarakhand Power Corporation Ltd.
