| HTCC | H-Town Camaro Club 
| Others |
| HTCC | Hand Therapy Certification Commission
| Others |
| HTCC | Hanover Township Community Center
| Others |
| HTCC | Haskell to Handel C Compiler
| Others |
| HTCC | Haverford Township Civic Council
| Others |
| HTCC | Health Technology Clinical Committee
| Others |
| HTCC | Healthcare Technology Certification Commission
| Others |
| HTCC | High Tech Competence Center
| Others |
| HTCC | High Tech Crime Consortium
| Others |
| HTCC | High temperature co-fired ceramic
| Others |
| HTCC | High Temperature Cofired Ceramic
| Others |
| HTCC | High Threshold Cerenkov Counter
| Others |
| HTCC | High Throughput Culture Collection
| Others |
| HTCC | High Turbulence Combustion Chamber
| Others |
| HTCC | Hindu Temple and Cultural Center
| Others |
| HTCC | Hindu Temple Cultural Center
| Others |
| HTCC | Historic Touring Car Challenge
| Others |
| HTCC | Historique Tourisme Champion Car
| Others |
| HTCC | Home Team Cadet Corps
| Others |
| HTCC | Honors Transfer Council of California Honors Transfer
| Others |
| HTCC | Horticultural Therapeutic Community Center
| Others |
| HTCC | Hotel Tucson City Center
| Others |
| HTCC | House Tech Construction Company
| Others |
| HTCC | Housing Tax Credit Contribution
| Others |
| HTCC | Hungarian Trade and Cultural Center
| Others |