| Name | Country | Market Cap (US$) |
|---|
| 1 Limited | United Kingdom | Private |
| 1St Net Technologies Inc | United States | Private |
| 2H ENERGY | France | Private |
| 3 Y Power Technology Inc. | United States | Private |
| 3C Alliance LLP | United States | Private |
| 3D Technologies (Wujiang) Co., Ltd. | China | Private |
| 3M (Electronic Products) | United States | Private |
| 3M Precision Optics, Inc. | United States | Private |
| 3Ware, Inc. | United States | Private |
| 4 Star Electronics, Inc. | United States | Private |
| 4MBO International Electronic AG | Germany | Private |
| A A F-MCQUAY UK LTD | United Kingdom | Private |
| A B Chance Co | United States | Private |
| A C M DI ACERBIS MARIO & C. SNC | Italy | Private |
| A Force Manufacturing Ltd | Hong Kong | Private |
| A T & S India Limited | India | Private |
| A V X ISRAEL LTD. | Israel | Private |
| A&T Battery Corporation | Japan | Private |
| A'SYCK CO.,LTD. | Japan | Private |
| A.A.G. STUCCHI SRL | Italy | Private |
| A.A.SILVA - IMOVEIS, COMÉRCIO E INDUSTRIA, S.A. | Portugal | Private |
| A.B. Mikroelektronik Gesellschaft mit beschränkter Haftung | Austria | Private |
| A.E.B. SRL | Italy | Private |
| A.F. Bambach Holdings Pty. Limited | Australia | Private |
| A.L. ELECTRONICS - ENGINEERING SERVICES & PRODUCTION LTD. | Israel | Private |
| A/S Nordisk Solar Compagni | Denmark | Private |
| AAC Acoustic Technologies (Changzhou) Co., Ltd. | China | Private |
| AAC Microtech (Changzhou) Co., Ltd. | China | Private |
| AAR Aircraft Component Services | United States | Private |
| Aavid Thermal Technologies, Inc. | United States | Private |
| Aavid Thermalloy LLC | United States | Private |
| AAVID THERMALLOY SRL | Italy | Private |
| AB ELECTRONIC ASSEMBLIES LTD | United Kingdom | Private |
| AB Elektronik GmbH | Germany | Private |
| Ab Interconnect, Inc. | United States | Private |
| ABACUS ELECTRONICS HOLDINGS LTD | United Kingdom | Private |
| Abacus Electronics Holdings Ltd | United Kingdom | Private |
| Abacus Group plc | United Kingdom | Private |
| Abacus Lighting Ltd | United Kingdom | Private |
| Abacus Technology Holdings Ltd | South Africa | Private |
| ABB Contracting Co. Ltd. | Saudi Arabia | Private |
| ABB FRANCE | France | Private |
| ABB Holdings Ltd. | United Kingdom | Private |
| ABB Inc. | United States | Private |
| ABB LIMITED | Vietnam | Private |
| ABB Ltda. | Brazil | Private |
| ABB s.r.o. | Czech Republic | Private |
| ABB Stotz-Kontakt Gesellschaft mit beschränkter Haftung | Germany | Private |
| ABB TRANSFORMERS S A E | Egypt | Private |
| ABB Treasury Center (USA), Inc. | United States | Private |
| ABB Xi'an Power Capacitor Co., Ltd. | China | Private |
| Abba Electronics L L C | United Arab Emirates | Private |
| ABBA Hitech (Shanghai) Co., Ltd. | China | Private |
| ABERDARE CABLES (PTY) LTD | South Africa | Private |
| Abi Malaysia Sdn Bhd | Malaysia | Private |
| Abilis Systems Sarl | Switzerland | Private |
| ABL Sursum Bayerische Elektrozubehör GmbH & Co. KG | Germany | Private |
| Ablerex Electronics (Suzhou) Co., Ltd. | China | Private |
| Abracon Corporation | United States | Private |
| ABSL POWER SOLUTIONS LTD | United Kingdom | Private |
| AC Energy Inc | United States | Private |
| ACAL ELECTRONICS LTD | United Kingdom | Private |
| Acal New York, Inc. | United States | Private |
| Acbel Electronics (Dongguan) Co., Ltd. | China | Private |
| Accelink Technologies Co., Ltd | China | Private |
| ACCUMA SPA | Italy | Private |
| Accurate Electronics Inc | United States | Private |
| Accuris Co., Ltd. | South Korea | Private |
| Accutron, Inc. | United States | Private |
| ACD Systemtechnik GmbH | Germany | Private |
| ACDC CORP. | Taiwan | Private |
| ACEBSA AISLANTES CONDUCTORES ESMALTADOS Y BARNICES SA | Spain | Private |
| ACM Research, Inc | United States | Private |
| ACME Electronics (Kunshan) Co., Ltd. | China | Private |
| Acoustic Technologies, Inc. | United States | Private |
| ACP Electronics Co., Ltd. | China | Private |
| AcroPower Corporation | United States | Private |
| Act Co., Ltd. | South Korea | Private |
| ACT Electronics, Inc. | United States | Private |
| ACT Manufacturing, Inc. | United States | Private |
| ACTIA ITALIA SRL | Italy | Private |
| Active Link Communication | United States | Private |
| Actown-Electrocoil, Inc. | United States | Private |
| Actronix Inc. | United States | Private |
| Acumentrics Corporation | United States | Private |
| Acumuladores Moura S/A. | Brazil | Private |
| ACW Technology Limited | United Kingdom | Private |
| AD WELL, K.K. | Japan | Private |
| Adco Circuits Inc | United States | Private |
| ADCOMAT BATAM, PT | Indonesia | Private |
| Adelco Sistemas de Energia Ltda. | Brazil | Private |
| Adels-Contact Elektrotechnische Fabrik GmbH & Co. KG | Germany | Private |
| ADFlex Solutions, Inc. | United States | Private |
| ADT Operations, Inc. | United States | Private |
| Adva-Lite Inc | United States | Private |
| ADVAN MICRO TECH, K.K. | Japan | Private |
| Advance Flash Memory Card Technology Co., Ltd. | Taiwan | Private |
| ADVANCE POWER DISPLAY SYSTEM LIMITED | India | Private |
| Advanced Biometrics Inc | United States | Private |
| Advanced Circuits Inc | United States | Private |
|
