| 7412 | Billing and bookkeeping services | |
| 7412 | Billing services | |
| 1723 | Binder and baler twine, manufacturing | |
| 5150 | Binder twine, wholesale | |
| 2222 | Binderies (i.e., bookbinding shops) | |
| 2101 | Binders' board, manufacturing | |
| 2222 | Binders, looseleaf, manufacturing | |
| 2929 | Bindery machinery, manufacturing | |
| 1722 | Binding carpets and rugs for the trade | |
| 3000 | Binding equipment (i.e., plastic or tape binding), office type, manufacturing | |
| 5131 | Binding, textile, wholesale | |
| 1729 | Bindings, bias, made from purchased fabric | |
| 1729 | Bindings, cap and hat, made from purchased fabric | |
| 1729 | Bindings, narrow woven, manufacturing | |
| 3694 | Bingo boards (games), manufacturing | |
| 2221 | Bingo cards, printing | |
| 9249 | Bingo halls | |
| 9249 | Bingo operation | |
| 9249 | Bingo parlours | |
| 5139 | Bingo supplies, wholesaler-distributor | |
| 1912 | Binocular cases, manufacturing | |
| 3320 | Binoculars and other optical goods repair | |
| 3320 | Binoculars, manufacturing | |
| 5239 | Binoculars, retail | |
| 5139 | Binoculars, wholesale | |
| 2812 | Bins (e.g., grain and feed storage), light gauge metal, manufacturing | |
| 2811 | Bins, fabricated metal plate, manufacturing | |
| 8519 | Biofeedback centres | |
| 1810 | Biohazard protective suits and accessories, manufacturing | |
| 7421 | Biological consulting services | |
| 7310 | Biological consulting, commercial | |
| 8519 | Biological laboratories (not manufacturing facility) | |
| 5139 | Biological medicines, wholesale | |
| 7310 | Biological research, commercial | |
| 7310 | Biological research, non-commercial | |
| 7422 | Biological testing (except clinical and veterinary) | |
| 7310 | Biology research and development laboratories | |
| 4530 | Biomass energy equipment (except power boilers), installation | |
| 4530 | Biomass energy equipment (power boilers), installation | |
| 3311 | Biopsy instruments and equipment, manufacturing | |