 | A2Sea A/S, Fredericia | |
 | Aasen Shipping AS, Mosterhamn | |
 | ABC Maritime AG, Nyon | |
 | Abis Shipping B.V., Harlingen | |
 | Absolute Shipping Ltd., Maidstone | |
 | ACE Tankers C.V., Amsterdam | |
 | Atlantic Container Line Co.Ltd., Westfield | |
 | Atlantis Tankers Group, Istanbul | |
 | Acta Marine B.V., Den Helder | |
 | Adamar Denizcilik Nakliyat A.S., Istanbul | |
 | Admanthos Shipping Agency Inc., Stamford | |
 | Admarin Denizcilik san.Tic. Ltd.. Istanbul | |
 | Admibros Shipmanagement Co.Ltd., Nicosia | |
 | Adrasan Shipping Inc., Istanbul | |
 | Aegean Bunkering Services Inc., Piraeus | |
 | AET Tankers Holdings Sdn.Bhd., Kuala Lumpur | |
 | UAB Afalita Shipping, Klaipeda | |
 | Aktiengesellschaft 'Ems', Emden | |
 | Ahlmarco B.V., Hilversum | |
 | Ahrenkiel Shipmanagement GmbH & Co.KG, Hamburg | |
 | Gebrüder Ahrens KG, Stade | |
 | AIDA Cruises GmbH & Co.KG, Rostock | |
 | Akar Shipping A.S., Istanbul | |
 | Aksay Denizcilik ve Ticaret A.S., Istanbul | |
 | Alaska Reefer Management, Seattle | |
 | Albros Shipping & Trading Ltd., Istanbul | |
 | Algoma Shipping Inc., St. Catharines | |
 | Alliance Maritime Corp., Den Haag | |
 | Alloceans Shipping Co.Ltd., Athens | |
 | Allseas Marine Contractors S.A., St. Denis | |
 | Ernst-August von Allwörden KG, Drochtersen | |
 | Alpha Shipmanagement GmbH & Co.KG, Bremen | |
 | Alstership GmbH & Co.KG, Hamburg | |
 | Rederi AB Älvtank, Donsø | |
 | Amasus Shipping B.V., Farmsum | |
 | Ameland Shipping B.V., Harlingen | |
 | American Roll-on Roll-off Inc., Park Ridge | |
 | Amisco AS, Tallinn | |
 | Anabatik Ltd., British Virgin Islands | |
 | Ancora Investment Trust Inc., Glyfada | |
 | International Andromeda Shipping S.A.M., Monte Carlo | |
 | Anet Scheepvaart B.V., Delfzijl | |
 | Anglo-Nordic Shipping Co.Ltd., London | |
 | American Natural Soda Ash Corporation, Westport | |
 | Anthony Veder Rederijzaken B.V., Rotterdam | |
 | Port of Antwerp N.V., Antwerpen | |
 | American President Line, Singapore | |
 | Ar.Co.In. Compagnia Armatoriale Industriale S.p.A., Venezia | |
 | ARA Shimanagement B.V., Werkendam | |
 | Arash Shipping Enterprise Ltd., Nicosia | |
 | Arcadia Shipmanagement S.A., Athens | |
 | Arcelor Mittal Shipping Inc., London | |
 | Ardmore Shipping Ltd., Hamilton | |
 | Arkas Shipping & Transport S.A., Izmir | |
 | Arklow Shipping Ltd., Arklow | |
 | Armador Shipmanagement Ltd., Istanbul | |
 | Asphalt Carrier Shipping Co.Ltd., Limassol | |
 | Associated Maritime Co.Ltd., Hong Kong | |
 | Ata Shipping Co.Ltd., Valetta | |
 | Athenian Shipping S.A., Athens | |
 | Atlanship S.A., La Tour-de-Peilz | |
 | Atlantic Marine Shipping Co.Ltd. | |
 | Atlantica di Navigazione S.A., Palermo | |
 | Atlantik Denizcilik Sanayi ve Ticaret A.S., Istanbul | |
 | Atlantska Plovidba d.d., Dubrovnik | |
 | Atlas Marine Ltd., Piraeus | |
 | Atlas Salvage & Towage S.A., Piraeus | |
 | Augustea Shipmanagement S.r.l., Augusta | |
 | Augustea Oceanbulk Maritime Lda., Madeira | |
 | Aurora Tankers Management Pte.Ltd., Singapore | |
 | AVIC International Maritime Holdings Ltd., Singapore | |
 | Avin International S.A., Athens | |
 | Ayder Tankers A.S., Istanbul | |
 | Azamara Club Cruises Ltd., Miami |