| TROC | Taiwan Regional Operations Center
| Others |
| TROC | tastytrade Return on Capital
| Others |
| TROC | The Race Of Children
| Others |
| TROC | The Rest of Canada
| Others |
| TROC | The Revenue Optimization Companies
| Others |
| TROC | Three Rivers Outdoor Club
| Others |
| TROC | Towing Regulatory and Oversight Council
| Others |
| TROC | Towing Regulatory Oversight Council
| Others |
| TROC | Toyota Revo Owners Club
| Others |
| TROC | Transportation Resource Oversight Committee
| Others |
| TROC | Trial Removal of Catheter
| Others |
| TROC | Tribes Renegades Online Community
| Others |
| TROC | Triumph Razoredge Owners Club
| Others |
| TROC | Triumph Roadster Owners Club
| Others |
| TROC | Trocadero Theatre
| Others |
| TROC | Type R Owners Club
| Others |