- ATLAS INCINERATORS A/S
- 4TaKT Engineering & Diesel Components BV
- AAE GmbH
- Abel GmbH & Co. KG
- ACEL AS
- Adan Limited
- ADEC Marine
- ADMos-Gleitlager, Produktions- und Vertriebsgesellschaft mbH
- Advance Electronics Ltd
- Advanced Component Technology
- Advanced Pneumatic Marine GmbH
- Adveto Advanced Tech
- AEGIR Marine B.V.
- AERON AS
- Aeron Miljoteknikk AS
- Aerzener Maschinenfabrik GmbH
- Afriso Eurogauge Ltd
- Aggreko France S.A.R.L.
- AH Automation AB
- Air Liquide Welding
- Air Products AS
- AIRVA
- Ajax Chubb Varel
- AKO Regelungstechnik GmbH & Co. KG
- Albany Engineering Co Ltd
- Alco Valves Group Norway
- Alessandro Marine Propulsion Systems B.V.
- Alfa Laval Aalborg A/S (formerly Aalborg Industries AS)
- Alfa Laval Mid Europe GmbH
- ALFA LAVAL TUMBA AB
- Algae-X Europe BV
- ALLPA B.V.
- ALLWEILER AS
- alpha-bit GmbH
- Alphatron Marine BV
- ALU DESIGN & SERVICES AS
- Alubar AS
- Aluland B.V.
- ALUP KOMPRESSOREN GmbH
- AMETEK Test & Calibration Instruments
- AMI EXCHANGERS Ltd.
- AMI-GFV Marine Ltd
- AMPLIDAN A/S
- ANDA OLSEN AS
- Anglo Belgian Corporation NV
- Antwerp Diesel Pumps NV
- ANTWERPSE Staal Services N.V
- API Schmidt-Bretten GmbH & Co. KG
- Apollo Fire Detectors Limited
- Apparatebau Warmetechnik GmbH
- AQUAGIV GmbH
- Aquata Produktions u. Entwicklungsgesellschaft mbH
- aquatherm GmbH
- ARCTIC MARINE FURNITURE AS
- ARI-Armaturen Albert Richter GmbH & Co. KG
- Ariston Norway AS
- ARMATEC AS
- Armaturenbau GmbH
- Artboard AB
- AS SCAN
- AS Scholer + Bolte GmbH
- Ascon AB
- AST GROUP
- ATB Laurence Scott Ltd
- ATB Nordenham GmbH
- Atlantas Marine Ltd
- Atlantis Marine Power Ltd
- Atlas Copco Tools & Assembly Systems
- ATLAS HYDROGRAPHIC GmbH
- AUKRA MARITIME AS
- AUMA Riester GmbH & Co. KG
- Autexier
- AUTO MASKIN AS
- AUTOMASJON OG DATA AS
- AXTech AS
- B.Hepworth & Co Ltd
- BAC Corrosion Control A/S
- Bailey & Mackey Ltd
- Bainbridge Marine
- Bakker Sliedrecht Electro Industrie BV
- Barksdale GmbH
- BASLER ELECTRIC
- Batt Cables
- BAY Valves ApS
- Baytek Industriesysteme GmbH
- BCB International Ltd
- Becker Marine Systems
- BEHA HEDO INDUSTRIES AS
- Beijer Electronics GmbH & Co. KG
- Beldam Crossley
- Belzona Polymerics Limited
- BEMO RAIL B.V.
- Bengine Engine Repair & Trading B.V.
- Berg Armaturen Steuerungen GmbH
- BERG PROPULSION AB
- Bergaflex AB
- BESI Marine Systems GmbH
- Bibby Transmissions Ltd
- Billi Dichtungstechnik GmbH
- BIO-SEA