| Tongue Point Naval Air Station | Astoria | OR |
| Tonto | Portland | OR |
| Toyosu Maru | Portland | OR |
| Trader | Portland | OR |
| Trailblazer | Portland | OR |
| Transhudson | Portland | OR |
| Transsuperior | Portland | OR |
| Transwarren | Portland | OR |
| Treadwell Nursing Home | Portland | OR |
| Tresus | Portland | OR |
| Tribulus | Portland | OR |
| Trigonosemus | Portland | OR |
| Trinity | Portland | OR |
| Tri State Mill & Supply | Portland | OR |
| Triton | Portland | OR |
| Trochiscus | Portland | OR |
| Troy Laundry | Portland | OR |
| Tuolumne Meadows | Portland | OR |
| Turbinellus | Portland | OR |
| Twin Falls Victory | Portland | OR |
| Umatilla | Portland | OR |
| Umatilla Chemical Depot | Umatilla | OR |
| Umpqua Lumber | Myrtle Creek | OR |
| Unified Sewage Agency | Hillsboro | OR |
| Unified Sewage Agency | Aloha | OR |
| Union Carbide | Portland | OR |
| Union Meat | Portland | OR |
| Union Oil | Portland | OR |
| Union Pacific Railroad | Portland | OR |
| Union Victory | Portland | OR |
| United Airlines | Portland | OR |
| United Data Processing | Portland | OR |
| United Medical Laboratory | Portland | OR |
| United Radio | Portland | OR |
| United States Builder | Portland | OR |
| United States Gypsum | Pilot Rock | OR |
| United States National Bank | Hillsboro | OR |
| United States National Bank | Tigard | OR |
| United States National Bank | Portland | OR |
| United States Plywood | Coos Bay | OR |
| United States Plywood | Roseburg | OR |
| United States Plywood | Lebanon | OR |
| United States Victory | Portland | OR |
| United States War Department | Corvallis | OR |
| University Of Oregon | Portland | OR |
| University Of Oregon | Eugene | OR |
| Utah | Portland | OR |
| VA Hospital | Portland | OR |
| Valiant Nikki | Portland | OR |
| Valiant Warhead | Portland | OR |
