| CTBA | California Thoroughbred Breeders Association 
| Others |
| CTBA | California Tribal Business Alliance
| Others |
| CTBA | Center for Tax and Budget Accountability
| Others |
| CTBA | Central Texas Ballooning Association
| Others |
| CTBA | Central Texas Barbecue Association
| Others |
| CTBA | Central Texas Beekeepers Association
| Others |
| CTBA | Central Texas Bengali Association
| Others |
| CTBA | Central Texas Bluegrass Association
| Others |
| CTBA | Centre Technique du Bois et de l'Ameublement
| Others |
| CTBA | Chinese Taipei Badminton Association
| Others |
| CTBA | Chinese Taipei Baseball Association
| Others |
| CTBA | Chinese Taipei Basketball Association
| Others |
| CTBA | Chinese Taipei Billiard Association
| Others |
| CTBA | Colerain Township Business Association
| Others |
| CTBA | Colorado Thoroughbred Breeders Association
| Others |
| CTBA | Concentration of Total Biliary Acids
| Others |
| CTBA | Connecticut Broadcasters Association
| Others |
| CTBA | Construction Technology Business and Architecture
| Others |
| CTBA | Cricket Training Balls Australia
| Others |
| CTBA | Croatian Technology Business Association
| Others |
| CTBA | Cuatro Torres Business Area
| Others |
| CTBA | Cystine Tellurite Blood Agar
| Others |