- CEDES EUROPE
- Ceiling Works
- CEMP srl.
- CENTA Antriebe Kirschey GmbH
- CENTA Transmissions Ltd.
- Centork Valve Control, S.L.
- Central Industry Group (CIG)
- CENTRAL MARITIME Co.,Ltd.
- Cetrac GmbH
- CF HVAC 3000, S.L, Spain
- CGG VERITAS / LAND DIVISION / SWOBS
- Changshu Longteng Special Steel co.,ltd.
- Changshu Oceansail Shipping Equipment Co., Ltd
- Changshu Ruite Electrical Apparatus Co., Ltd.
- Changzhou CAMON Instrument & Meter Co., Ltd
- CHANGZHOU MATCH-WELL REFRIGERATION CO.,LTD
- Changzhou Zhonghai Marine Propeller Co.,Ltd
- Chase Protective Coatings Ltd,
- Cheong Gu Tech Co Ltd
- CHESTER MOLECULAR Ltd.
- CHEVRON PRODUCTS SCANDINAVIA AB
- Chevron Shipping Company LLC
- China Century Marine Equipment Group
- China Hangyu Industry CO. Ltd
- China Honyuan Machinery co.,Limited
- China Shipbuilding & offshore International Co., Ltd. (CSOC)
- China Shipbuilding Industry Equipment and Materials Co., Ltd
- CHINA TIANJIN PUMPS & MACHINERY GROUP CO. LTD
- China Wuxi Zhouxiang Enterprise
- China-Kyle Industrial Co. Ltd
- CHLOD SERVIS INT EXPORT IMPORT F.P.H.M
- Chognqing ACIR Trading Co.,Ltd
- Chongqing Hi-Sea Marine Equipment Import & Export Co., Ltd.
- Chongqing Shipbuilding Trading Co., Ltd
- Chongqing Yunda Machinery & Electronics Manufacturing Co., Ltd.
- Chongqing Yushuo Import & Export Business Co., Ltd
- CHRIS-MARINE AB
- Christie & Grey Ltd
- CIHAN GEMI ELEKTRONIGI Elektrik ve Elektronik San. Ve Tic. Ltd. Sti.
- Citreon-Messian-Durand
- Cla-Val Canada Ltd
- CLA-VAL UK Limited
- Class Instrumentation Ltd
- Classic Automation LLC
- CLAYTON OF BELGIUM NV
- CLAYTON SCANDINAVIA AS
- CleanAIR Systems, Inc.
- Cleemann Chair-Systems GmbH
- Clements Engineering (St Neots) Ltd
- Click Bond, Inc.
- CLIMAX GmbH
- Cloud Company Inc
- CLYDEUNION Pumps
- CM Technologies GmbH (formerly Kittiwake GmbH)
- CMI Marine
- CMR Controle Mesure Regulation
- CNAi
- CNIM
- CNPC Jinan Diesel Engine Co., Ltd.
- COATES OFFSHORE
- Cofi s.r.l.
- Coldharbour Marine Ltd
- Coldharbour Marine Ltd.
- ColorLight AB
- Coltec Ind - Fairbanks Morse
- Coltraco Ltd
- COMBIMAC B.V.
- COMET GMBH
- Comnav Marine Ltd
- Compass Marine Services
- Compass Water Solutions
- COMPRESSED AIR CENTRE
- COMROD A/S
- COMSYSTEMS Solutions
- CONEX METALS (India)
- CONRAC GmbH
- Consilium AB
- Consilium Marine & Safety AB
- Consilium Marine Systems BV
- CONSTRUCTION PLANT OF LIFTING EQUIPMENT ZBUD Ltd.
- CONVOTHERM Elektrogeraete GmbH
- Cool D'fine Pte Ltd
- Cooper Gitiesse S.r.l.
- Cooper Roller Bearings Co Ltd
- Coops en Nieborg B.V.
- Copes-Vulcan Inc
- Cordoaria Oliveira Sa SA
- Cornes & Co., Ltd.
- Corrosion & Water-Control Shared Services BV
- COSALT BV (Survitec Group)
- Cosalt GmbH
- Cosalt Head Office
- Coupling Corporation America
- Coursemaster Autopilots Pty Ltd
- Cramer Systemtechnik GmbH
- Cramm Yachting Systems
- Crestchic Loadbanks
- Crewsaver Marine Equipment
- Croatia Pumpe Nova Ltd
- Croon Elektrotechniek BV