| Acronym | Definition |
|---|
| BIRD | Bird Internet Routing Daemon |
| BIRD | Banque Internationale pour la Reconstruction et le Développement (French: International Bank for Reconstruction and Development; World Bank; est. 1945) |
| BIRD | Binational Industrial Research and Development Foundation (US-Israel collaboration; Tel Aviv, Israel) |
| BIRD | blackbody infrared radiative dissociation |
| BIRD | Banco Internacional para la Reconstrucción y el Desarrollo |
| BIRD | Bankers Institute of Rural Development |
| BIRD | Budget, Intelligence and Related Database (US DoD) |
| BIRD | Bloqueo Incompleto de Rama Derecha (Spanish: Incomplete Right Branch; medicine) |
| BIRD | Best-Evidence Retrieval and Delivery (health care research) |