| Name | Country | Market Cap (US$) |
|---|
| Automation Precision Technology, Llc | United States | Private |
| Automatización y Control Técnica, S.A. de C.V. | Mexico | Private |
| Automed Technologies, Inc | United States | Private |
| Autometric, Inc. | United States | Private |
| AutoMind Ltda. | Chile | Private |
| Automobile Protection Corporation (APCO) | United States | Private |
| Automotive Safety Components International GmbH & Co. KG | Germany | Private |
| Autosompa Yhtymä Oy | Finland | Private |
| AUXILIAR DE INGENIERIA SA | Spain | Private |
| AUXITEC INDUSTRIE | France | Private |
| Auxitrol SA | France | Private |
| Avag Holding Ag | Germany | Private |
| Avail Consulting, LLC | United States | Private |
| Avant Sourcing | United States | Private |
| Avantair, Inc. | United States | Private |
| Avantium Technologies B.V. | Netherlands | Private |
| Avatech Solutions Subsidiary, Inc | United States | Private |
| AVAYA HOLDINGS LTD | Republic of Ireland | Private |
| AVAYA LTD | United Kingdom | Private |
| AVEA GmbH & Co. KG | Germany | Private |
| AVEBURY INTERNATIONAL P L C | United Kingdom | Private |
| Avectra Inc | United States | Private |
| Avenir Group Inc. | United States | Private |
| aventic Partners AG | Switzerland | Private |
| Aventis Pasteur Limited | Canada | Private |
| AVEO Pharmaceuticals, Inc | United States | Private |
| Avestha Gengraine Technologies Private Limited | India | Private |
| Avf Investments Ltd | United Kingdom | Private |
| AVG Abfallentsorgungs-und Verwertungsgesellschaft Köln mbH | Germany | Private |
| Aviation Communication & Surveillance Systems Llc | United States | Private |
| Aviation Legal Group Pa | United States | Private |
| Aviatsionnaya Korporatsiya Rubin OAO | Russia | Private |
| Avid Technology International B.V. | Netherlands | Private |
| Aviel Systems Inc | United States | Private |
| Avireal AG | Switzerland | Private |
| AVIS MANAGEMENT SERVICES LTD | United Kingdom | Private |
| AVM Beheer B.V. | Netherlands | Private |
| Avnet Europe CVA | Belgium | Private |
| AVONCROP LTD | United Kingdom | Private |
| AVTERA D.O.O. | Slovenia | Private |
| Avue Technologies Corporation | United States | Private |
| Avus International Consulting B.V. | Netherlands | Private |
| AW ENGINEERING.CO,LTD. | Japan | Private |
| Awa Konsult Ab | Sweden | Private |
| Awalnet | Saudi Arabia | Private |
| Awapatent Ab | Sweden | Private |
| AWB Investments Limited | Australia | Private |
| AWD Gesellschaft für Wirtschaftsberatung Gesellschaft m.b.H. | Austria | Private |
| AWD Gruppe Deutschland GmbH | Germany | Private |
| AWE PENSION TRUSTEES LTD | United Kingdom | Private |
| AWP Wirtschaftsprüfungs GmbH | Austria | Private |
| Aws Holding B.V. | Netherlands | Private |
| AWZ AG | Switzerland | Private |
| AXA Rosenberg Management Ireland Ltd | Republic of Ireland | Private |
| AXA TECHNOLOGY SERVICES | France | Private |
| Axelssons Damkonfektion Sverige AB | Sweden | Private |
| AXEMBLE SOLUTIONS FOR INDUSTRIES | France | Private |
| Axens North America, Inc | United States | Private |
| Axfood IT AB | Sweden | Private |
| AXIALOG | France | Private |
| Axico Inc. | Japan | Private |
| AXIO CORPORATION | Japan | Private |
| Axiom Corporation | United States | Private |
| Axiom International Investors LLC | United States | Private |
| AXIOME TECHNOLOGIES | France | Private |
| AXIOS | France | Private |
| Axium International, Inc | United States | Private |
| AXON SOLUTIONS LTD | United Kingdom | Private |
| AXS SATOW INC. | Japan | Private |
| AYH Plc | United Kingdom | Private |
| Ayres Associates Inc | United States | Private |
| Azaire Networks, Inc. | United States | Private |
| Azimuth, a.s. | Czech Republic | Private |
| AZL N.V. | Netherlands | Private |
| Aztec Engineering Group, Inc | United States | Private |
| Aztec Software Incorporated | United States | Private |
| AZUSA SEKKEI CO.,LTD. | Japan | Private |
| Azzurri Communications Limited | United Kingdom | Private |
| B & H Schneider GmbH & Co.KG | Germany | Private |
| B A I (U K) LTD | United Kingdom | Private |
| B D Systems Inc | United States | Private |
| B E & K Engineering Company (Inc) | United States | Private |
| B E BILLIMORIA & COMPANY LIMITED | India | Private |
| B G INTERNATIONAL (C N S) LTD | United Kingdom | Private |
| B M T Defence Services Ltd | United Kingdom | Private |
| B P GREECE LTD | United Kingdom | Private |
| B R C LTD | United Kingdom | Private |
| B Uniqema | United States | Private |
| B-Line, Llc | United States | Private |
| B. & Mck. Services Limited | Hong Kong | Private |
| B. Bosch S.A. | Chile | Private |
| B. P. Barber & Associates, Inc | United States | Private |
| B.C.K. Builders Inc. | United States | Private |
| B.V. Obrigado Management Amersfoort | Netherlands | Private |
| B/E AEROSPACE (UK) LTD | United Kingdom | Private |
| B2I INGENIERIE ET TECHNOLOGIES | France | Private |
| BAB-HITACHI SOFTWARE K.K. | Japan | Private |
| Babcock Borsig Service GmbH | Germany | Private |
| Babcock Eagleton, Inc | United States | Private |
| BACHY SOLETANCHE LTD | United Kingdom | Private |
|