- U-Haul Truck Rental, Rockville - U-Haul Moving
- U-Haul Trucks, Rockville - Uhaul Truck Rental
- U.S. Postal Service, Rockville
- Ultrasonic Equipment & Supplies, Rockville
- Unfinished Furniture, Rockville
- Uniforms, Rockville
- Uniforms, Work Clothes & Safety Clothing, Rockville
- Unitarian Universalist Churches, Rockville
- Upholstery Fabric Stores , Rockville
- Urban Regional & Rural Planners & Consultants, Rockville
|
- Urologists, Rockville - Urology Doctors, Physicians & Surgeons
- Used Book Stores, Rockville - New & Rare Books
- Used Cars, Truck, Van & SUV Car Dealerships, Rockville
- Used Furniture Stores, Rockville - Used Office, Patio, Hotel, Baby & Bedroom Furniture Dealers
- Used Merchandise, Resale Shops & Thrift Stores, Rockville
- Utilities, Rockville
- Utilities Contractors, Rockville
- Utility & Waste Management Services, Rockville
- Utility Installation Contractors, Rockville
|
