| Three Phase Line Construction, Inc. NH | Construction | 1 | $85,000 | — |
| Three Pirates LLC OR | Wholesale Trade | 0 | — | F |
| Three Pirates, LLC dba Point Blank Distributing OR | — | 0 | — | — |
| Three River Boat & Barge INC. KY | Manufacturing | 0 | — | F |
| Three Rivers Ambulance Authority IN | Healthcare & Social Assistance | 0 | — | F |
| Three Rivers Corporation MI | Construction | 0 | — | A |
| Three Rivers Distributing AR | Wholesale Trade | 0 | — | A |
| Three Rivers Electric Cooperative MO | Utilities | 0 | — | F |
| Three Rivers Health & Rehab NC | Healthcare & Social Assistance | 0 | — | A |
| Three Rivers Health & Rehabilitation Center NC | Healthcare & Social Assistance | 0 | — | A |
| Three Rivers Health and Rehabilitation AR | Healthcare & Social Assistance | 0 | — | F |
| THREE RIVERS HOSPITAL TN | Healthcare & Social Assistance | 0 | — | A |
| Three Rivers Hospital WA | Healthcare & Social Assistance | 0 | — | F |
| Three Rivers Landfill MS | Administrative & Waste Services | 0 | — | F |
| Three Rivers Machine & Fab, INC KY | Manufacturing | 0 | — | A |
| Three Rivers Marine & Rail Terminals LLC PA | Transportation & Warehousing | 0 | — | B |
| Three Rivers Market TN | Retail Trade | 0 | — | B |
| Three Rivers Medical Center KY | Healthcare & Social Assistance | 0 | — | D |
| three rivers mi opco llc MI | Healthcare & Social Assistance | 0 | — | F |
| Three Rivers Park District MN | Public Administration | 0 | — | D |
| Three Rivers Radiology Associates, P.C. OR | Healthcare & Social Assistance | 2 | $500,000 | — |
| Three Rivers School District OR | Educational Services | 0 | — | A |
| Three Rivers Sheet Metal, Inc. OH | Construction | 0 | — | A |
| Three Rivers Sheltered Industries, Inc. MO | Healthcare & Social Assistance | 0 | — | F |
| Three Rivers Solid Waste Autho SC | Administrative & Waste Services | 0 | — | A |
| Three Rivers Solid Waste Authority SC | Administrative & Waste Services | 0 | — | A |
| Three Rivers Treatment Center VA | Healthcare & Social Assistance | 0 | — | D |
| Three Sons Inc. CA | Wholesale Trade | 0 | — | B |
| Three Sons Processing Texas Inc. TX | Manufacturing | 0 | — | A |
| Three Stone Hearth, LLC CA | Retail Trade | 0 | — | F |
| Three Trade Consultants Inc FL | Construction | 0 | — | F |
| Three Trails Delivery LLC. MO | Transportation & Warehousing | 0 | — | F |
| Three Trees Holdings CA | Transportation & Warehousing | 0 | — | A |
| Three Valleys Municipal Water District CA | Utilities | 0 | — | F |
| Three Way Locistics Inc CA | Transportation & Warehousing | 0 | — | F |
| Three Way Logistics CA | Transportation & Warehousing | 0 | — | D |
| Three Way Logistics Inc TX | Transportation & Warehousing | 0 | — | F |
| Three Z Printing IL | Manufacturing | 0 | — | F |
| Three-Way Cevrolet Co. dba Three-Way Chevrolet Cadillac CA | — | 0 | — | — |
| Threebyone USA, LLC CA | Wholesale Trade | 1 | $120,000 | — |
| ThreeC logistics NY | Transportation & Warehousing | 0 | — | D |
| Threecavies LLC OR | Retail Trade | 0 | — | A |
| Threecore, LLC OH | Construction | 0 | — | A |
| Threefold Holdings LLC NY | Manufacturing | 0 | — | D |
| ThreeJ Delivery OK | Transportation & Warehousing | 0 | — | F |
| ThreePlusOne Company LLC NY | Professional & Technical Services | 1 | $55,661 | — |
| THREESIXNINE INC. CA | Professional & Technical Services | 2 | $114,400 | — |
| Threshold Enterprises CA | Manufacturing | 0 | — | F |
| Threshold Enterprises VA | Transportation & Warehousing | 0 | — | A |
| Thrift Books MO | — | 0 | — | — |
