| Bacteriol. | bacteriology, bacteriologic(al) |
| B.C. | Before Christ |
| B.C. | British Columbia |
| Bedford. | Bedfordshire |
| Bedfordsh. | Bedfordshire |
| bef. | before |
| Bel & Dr. | (in the Apocrypha) Bel and the Dragon |
| Belg. | Belgian |
| Berks. | Berkshire |
| Berksh. | Berkshire |
| Berw. | Berwickshire |
| Berwicksh. | Berwickshire |
| betw. | between |
| Bibliogr. | bibliography |
| Biochem. | biochemistry, biochemical |
| Biog. | biography |
| Biogr. | biography, biographic(al) |
| Biol. | biology, biological |
| Bk. | book |
| Bks. | books |
| BNC | British National Corpus |
| Bord. | border |
| Bot. | botany, botanic(al) |
| Bp. | Bishop |
| Braz. | Brazilian |
| Brit. | Britain, British |
| Bucks. | Buckinghamshire |
| Build. | building |
| Bull. | bulletin |
| Bur. | bureau |
