- Trusted Edge Consult Limited
- Turahfrique Interiors Limited
- Turner & Townsend Nigeria
- Tusen Consulting Limited
- U-Connect Human Resource Limited
- Uleval Technology
- Uni-medical Healthcare Limited Nigeria
- Unilag Magodo Residents Association (UMRA)
- Unilever Nigeria Plc
- Union Diagnostic and Clinical Services Plc (UDCS Plc)]
- United Nations High Commissioner for Refugees
- United Nations World Food Programme
- United Nigeria Airlines
- Univacity
- University of Medical Sciences
- University of Nigeria Teaching Hospital (UNTH)
- Upcoming and Trail-blazing Radio Station
- Upstream Systems
- UsefulPDF
- VAB Solutions
- Value Edge Management Service Limited
- Vasiti Dotcom
- Veepee Group of Companies
- Vendease
- Venmac Resources Limited