| 2899 | Bank chests, metal, manufacturing | |
| 6603 | Bank deposit insurance | |
| 2811 | Bank fixtures, ornamental metal, manufacturing | |
| 6599 | Bank holding companies | |
| 2221 | Bank notes, printing | |
| 9111 | Bankers' association | |
| 7513 | Banking regulatory agencies, federal | |
| 8090 | Banking schools (training in banking) | |
| 6599 | Banking, investment | |
| 7411 | Bankruptcy trustees | |
| 6519 | Banks, commercial | |
| 6511 | Banks, Federal Reserve | |
| 6519 | Banks, private (i.e., unincorporated) | |
| 3694 | Banks, toy, manufacturing | |
| 5239 | Banner shops, retail | |
| 1721 | Banners, made from purchased fabric | |
| 2811 | Bannisters, metal, manufacturing | |
| 7010 | Banquet hall, without own catering staff, rental | |
| 7010 | Banquet halls or rooms, without own catering staff, rental | |
| 5520 | Banquet halls, with own catering staff, doing outside catering | |
| 2696 | Baptismal fonts, cut stone, manufacturing | |
| 9191 | Baptist church | |
| 9112 | Bar associations | |
| 3000 | Bar code scanners, manufacturing | |
| 5150 | Bar code scanning equipment, wholesale | |
| 5520 | Bar disco | |
| 5150 | Bar equipment, wholesale | |
| 3610 | Bar fixtures (except wood), manufacturing | |
| 3610 | Bar fixtures, wood, manufacturing | |
| 5150 | Bar furniture, wholesale | |
| 5142 | Bar joists, fabricated, wholesale | |
| 2923 | Bar mill machinery, manufacturing | |
| 2424 | Bar soaps, manufacturing | |
| 3610 | Bar tops, wood, manufacturing | |
| 2720 | Bar, copper or copper alloy, made from purchased metal | |
| 2720 | Bar, made by extruding purchased aluminum | |
| 2720 | Bar, made by rolling purchased aluminum | |
| 2720 | Bar, made from purchased aluminum | |
| 2720 | Bar, made from purchased non-ferrous metal (except aluminum, copper) | |
| 1549 | Barbecue sauce, manufacturing | |