| Kaiapoi Produce & Milling Co Ltd |
| Kaiopoi Shipping & Trading Co Ltd |
| Kaiapoi Shipping Company |
| Kaipara Steam Ship Co Ltd |
| Kakanui Steamship Co Ltd |
| Kamo Colliery Co Ltd |
| Karamea Shipping Co Ltd |
| Karamea Steamship Co Ltd |
| Kauri Timber Co Ltd |
| Kerridge Odeon Tourist Services |
| Kilgour Brothers |
| Kiwi Shipping Company |
| Kotiki Shipping Co Ltd |