| Dalgety & Sons Ltd |
| Deep Sea Co Ltd |
| Delich & Yukich Ltd |
| Denholm |
| Devonport Ferry Company |
| Devonport Steam Ferry Company |
| Direct Fish & Oyster Supply Co |
| A B Donald Ltd |
| Douglas Steamship Co |
| Duchess Steamship Co |
| Dumbarton & Balloch Joint Line Committee |
| Dunedin Ferry Co Ltd |
| Dunedin Steam Shipping Co Ltd |
| Dunedin-Wanganui Shipping Co |