| 2902 | Kainite mining | |
| 3521 | Kalsomine manufacturing | |
| 3699 | Kaolin grinding and treating, not at mine, pit or quarry | |
| 2901 | Kaolin mining or quarrying | |
| 3219 | Kapok manufacturing | |
| 3219 | Kapok padding manufacturing | |
| 3219 | Kapok upholstery filling manufacturing | |
| 3219 | Kapok willowing | |
| 1210 | Kauri gum digging | |
| 3692 | Keene's cement manufacturing | |
| 3819 | Keg, metal, manufacturing | |
| 3312 | Keg, wooden, manufacturing | |
| 1301 | Kelp gathering | |
| 9332 | Kennel, boarding | |
| 9332 | Kennel, commercial | |
| 2902 | Kernite mining | |
| 3819 | Kerosene heater, domestic, manufacturing | |
| 3819 | Kerosene lamp manufacturing | |
| 3819 | Kerosene lighting fixture manufacturing | |
| 3530 | Kerosene manufacturing | |
| 3113 | Ketchup manufacturing | |
| 3233 | Key case, leather, manufacturing | |
| 9519 | Key duplicating shop | |
| 3811 | Key manufacturing | |
| 3823 | Key seating machine manufacturing | |
| 3211 | Khaki cloth manufacturing | |
| 3220 | Kilt cutting and sewing | |
| 9310 | Kindergarten | |
| 3812 | Kitchen cabinet, metal, manufacturing | |
| 3320 | Kitchen cabinet, wooden, manufacturing | |
| 3811 | Kitchen cutlery manufacturing | |
| 3811 | Kitchen tool manufacturing | |
| 3819 | Kitchen utensil, vitreous enamelled, manufacturing | |
| 3560 | Kitchen ware, plastic, manufacturing | |
| 3819 | Kitchen wire goods, non-ferrous, manufacturing | |
| 3319 | Kitchen woodenware manufacturing | |
| 3819 | Kitchenware, enamelled, manufacturing | |
| 3819 | Kitchenware, metal, manufacturing | |
| 3851 | Kneecap supporter manufacturing | |
| 3220 | Knickers cutting and sewing | |