| Acronym | Definition |
|---|
| CRBT | Color Ring Back Tone (telecommunications) |
| CRBT | Caller Ring Back Tone |
| CRBT | Center for Resourceful Building Technology |
| CRBT | Crying Real Big Tears |
| CRBT | Centre de Recherche sur les Ressources Biologiques Terrestres (French: Center for Research on Terrestrial Biological Resources; est. 1974) |
| CRBT | Connecticut River Birding Trail (Thetford Center, VT) |
| CRBT | Collection of Red-Black Trees (data structure) |
| CRBT | Coal Region Burger Tour (Pennsylvania) |
| CRBT | Cumberland River Bicentennial Trail (Ashland City, TN) |