| Acronym | Definition |
|---|
| RTSB➣Rentak Timur Sdn. Bhd. (Malaysian vanilla bean production company; est. 2004) |
| RTSB➣Roundtable on Sustainable Biofuels |
| RTSB➣Reel Tyme String Band (Indiana) |
| RTSB➣Residential Treatment Services Bureau (Los Angeles, CA) |
| RTSB➣Round Top State Bank (Texas) |