- ATLAS INCINERATORS A/S
- 1st-Relief GmbH
- 4TaKT Engineering & Diesel Components BV
- 5Elem Fire Hose Co., Ltd.
- A RIM MACHINERY & ENGINEERING CO.,
- A-SPE Polska
- A.& P. KOTSAMPASIS (Adams Hydraulics)
- AAE GmbH
- ABB Elektrik Sanayi A.S.
- ABB Jiangjin Turbo Systems Company Limited
- Abel GmbH & Co. KG
- Abordage SRL
- ACEL AS
- Acez Instruments Pte Ltd
- ACO Marine sro
- ACOMARIN Ltd OY
- ACR Electronics, Inc.
- Adan Limited
- ADEC Marine
- Aderco Chemical Products Inc. (Head office)
- ADMos-Gleitlager, Produktions- und Vertriebsgesellschaft mbH
- Adria Winch d.o.o.
- Adriadiesel d.d.
- ADRICK MARINE GROUP
- Advance Electronics Ltd
- Advanced Component Technology
- Advanced Marine Technologies
- Advanced Pneumatic Marine GmbH
- Adveto Advanced Tech
- AEGIR Marine B.V.
- Aeliya Marine Tech Private Limited
- AERON AS
- Aeron Miljoteknikk AS
- Aerzener Maschinenfabrik GmbH
- Afriso Eurogauge Ltd
- AGCO Power
- Aggreko France S.A.R.L.
- AH Automation AB
- AIP Ltd.
- AIR CONTROL [India] Pvt. Ltd.
- Air Liquide Welding
- Air Products AS
- AIRMAR TECHNOLOGY CORP.
- AIRVA
- Ajax Chubb Varel
- Akasaka Diesels Limited
- AKO Regelungstechnik GmbH & Co. KG
- AL NOOR ALAILI TRADING CO LLC
- ALANG Hub
- Alang Marine Services
- ALANG SHIPS SPARES TRADING CO.
- Albany Engineering Co Ltd
- Alco Valves Group Norway
- ALDAG ISITMA SOGUTMA KLIMA SANAYI A.S.
- ALDO GALLI Srl
- Alessandro Marine Propulsion Systems B.V.
- Alesta Marin Deniz Araclan Muhendislik Mumessillik
- Alexander/Ryan Marine & Safety Co.
- Alfa Laval Aalborg A/S (formerly Aalborg Industries AS)
- Alfa Laval Aalborg Ltd. (formerly Aalborg Industries Shanghai Limited)
- Alfa Laval Mid Europe GmbH
- ALFA LAVAL TUMBA AB
- Alfa Phe
- Algae-X Europe BV
- Algae-X International
- Allied Heat Transfer International
- ALLPA B.V.
- Alltek Marine Electronics Corp.
- ALLWEILER AS
- ALMACO Group Oy
- ALNOR Ventilation Systems Ltd.
- alpha-bit GmbH
- Alphatron Asia Pte Ltd
- Alphatron Marine BV
- Alstern Marine & Offshore Pte Ltd
- Alternative Material Services
- Altin Cipa Metal Sanayi A.S.
- ALTRA INDUSTRIAL MOTION SINGAPORE PTE LTD (formerly known as Warner Electric Singapore Pte Ltd)
- ALU DESIGN & SERVICES AS
- Alubar AS
- Aluland B.V.
- Aluminox SA
- ALUP KOMPRESSOREN GmbH
- ALVEDOOR (Kunshan) Co Ltd
- ALWO Ltd.
- Amco Veba srl
- AMERICAN SPRAYED FIBERS INC.
- AMETEK Test & Calibration Instruments
- AMEX Ltd.
- AMI EXCHANGERS Ltd.
- AMI-GFV Marine Ltd
- Amin Corporation
- AMOB Maquinas Ferramentas SA
- AMOT USA(Head office)
- Ampco Pumps Co Inc
- AMPLIDAN A/S
- AMS CO., LTD.
- Anchor Marine & Industrial Supply Co., Inc.
- Anchor Marine Equipment Co.,Ltd
- ANDA OLSEN AS