| Acronym | Definition |
|---|
| OTBC➣Open Technology Business Center (Beaverton, OR, USA) |
| OTBC➣Oulu Thaiboxing Club (Oulu, Finland) |
| OTBC➣Ocean Towers Beach Club (Panama City Beach, FL) |
| OTBC➣On the Ball City (Norwich City Football Club, UK) |
| OTBC➣OkTown Bike Crew (Germany) |
| OTBC➣Old Town Baptist Church (Winston-Salem, NC) |
| OTBC➣Over the Bars Club (bicycle club) |
| OTBC➣Oxford Terrace Baptist Church (Christchurch, New Zealand) |
| OTBC➣Occasional Thursday Bridge Club |
| OTBC➣Ocean Terrace Beach Club, Inc. (Palm Beach, Florida) |