| Acronym | Definition |
|---|
| XB➣Experimental Bomber (US military aircraft designation) |
| XB➣Xbox (Microsoft video game console) |
| XB➣Halifax to Boston (routing designation; US Navy; Canada and US) |
| XB➣X-Band |
| XB➣Extra-Budgetary |
| XB➣Exchangeable Bonds (corporate finance) |
| XB➣X-Bracings (structures) |