| BTAC | Bandit Trans Am Club 
| Others |
| BTAC | Barton Turf Adventure Centre
| Others |
| BTAC | Batesville Torpedos Aquatic Club
| Others |
| BTAC | Beaucaire Tarascon Aquatic Club
| Others |
| BTAC | Bedford Training and Assessment Centre
| Others |
| BTAC | Better Than A Cupcake
| Others |
| BTAC | Bicycle And Trails Advisory Committee
| Others |
| BTAC | Bicycle Trade Association of Canada
| Others |
| BTAC | Bicycle Trails Advisory Committee
| Others |
| BTAC | Bishop Tyrrell Anglican College
| Others |
| BTAC | Bloomington Theatre and Art Center
| Others |
| BTAC | Bluewater Technology Access Centre
| Others |
| BTAC | Boulder Transition Advisory Committee
| Others |
| BTAC | Branch Target Address Cache
| Others |
| BTAC | British Transport Advisory Committee
| Others |
| BTAC | British Transport Advisory Consortium
| Others |
| BTAC | Bruce Thornton Air Conditioning
| Others |
| BTAC | Buffalo Trace Antique Collection
| Others |
| BTAC | Burbank Temporary Aid Center
| Others |
| BTAC | Business Tax Advisory Committee
| Others |
| BTAC | Business Technologies and Administrative Careers
| Others |
| BTAC | Business Technology and Creativity
| Others |
| BTAC | Business Threat Awareness Council
| Others |
| BTAC | Businesses of Thornton Advisory Commission
| Others |
| BTAC | Buurabalayji Thalanyji Aboriginal Corporation
| Others |