- UAVs (Unmanned Aerial Vehicles) leasing/renting
- Underground storage tank removal
- Underground Utilities Installation
- Underwater photography
- Uniform Rental and Cleaning Services
- Unit Investment Trusts (UIT)
- United Nations Agencies and Offices
- Upholstery & Furniture Cleaning
- Upholstery manufacture
- Upholstery Services
- Upscale Hotels
- Urban Passenger Rail Transport
- Urban Planning
- Urology
- Used Furniture Retail
- User Interface (UI) Design
- User Interface Design and Development
- Utilities
- Utility software publishing