| Adelaide Steam Ship Company |
| African and Continental S.S.Co |
| A King Trawling |
| Albion Coal |
| Albion Line |
| Allan Line |
| Alwyn Shipping Co |
| Anchor Company |
| Anchor Line |
| Anchor Shipping & Foundary Company Limited |
| Anchor Shipping Company |
| Andersons Bay Ferry & Baths Co Ltd |
| Andersons (J) SS Co |
| Anglo-Saxon Petroleum Company |
| Aspden Shipping Company Limited Auckland |
| Assoociated Motorists Petrol Co Ltd |
| Auckland Agricultural & Merchantile Co Ltd |
| Auckland and North Shore Steam Ferry Company |
| Auckland Dredging Co ltd |
| Auckland Gas Co |
| Auckland Harbour Board |
| Auckland Launch & Tugboat Co Ltd |
| Auckland Mussel Co Ltd |
| Auckland Sanitary Co |
| Auckland Shingle Dredging |
| Auckland Steam Packet Co |
| Auckland Steamship Co |
| Auckland Tankers Limited |
| Auckland & Thames Steam Packet Co |
| Auckland Timber Co |
| Auckland Whaling |
| Australasian Steam Navigation Company Limited |
| Australasian United Navigation Co |
| Australasian Fish, Meat & Hide |
| Australasian Pearling Syndicate |
| Auto Batam Ferries and Tourism Pte. Limited |
| Auto Express Pte. Limited |
| Awakino-Mokau Shipping Co |
| Awaroa Shipping Co |