| 1730 | Knitting weft fabric | |
| 1730 | Knitting women's and girls' clothing (except hosiery), on a contract basis | |
| 1711 | Knitting yarn (e.g., cotton, man-made fibre, silk, wool), made in spinning mills | |
| 5232 | Knitting yarn and accessories, retail | |
| 1711 | Knitting yarn, wool, manufacturing | |
| 5131 | Knitting yarns, wholesale | |
| 2893 | Knives (e.g., hunting, pocket, table non-precious, table precious plated), manufacturing | |
| 2893 | Knives and bits, for metalworking lathes, planers and shapers, manufacturing | |
| 2930 | Knives, electric, domestic, manufacturing | |
| 2893 | Knives, machine (except metal cutting), manufacturing | |
| 3691 | Knives, precious metal (except plated), manufacturing | |
| 2893 | Knives, shear (metalworking), manufacturing | |
| 3311 | Knives, surgical, manufacturing | |
| 3692 | Knobs, organ, manufacturing | |
| 2029 | Knobs, wood, manufacturing | |
| 2926 | Knot tying machinery, textile, manufacturing | |
| 2922 | Knurling machines, manufacturing | |
| 0112 | Kohlrabi growing | |
| 2101 | Kraft liner board, manufacturing | |
| 2101 | Kraft paper stock, manufacturing | |
| 5149 | Kraft paper, gummed, wholesale | |
| 1410 | Kyanite mining | |