| Name | Country | Market Cap (US$) |
|---|
| ASI Solutions Inc. | United States | Private |
| Asia Pacific Ventures Ltd | United States | Private |
| AsiaInfo Technology (China) Inc. | China | Private |
| Asianajotoimisto Castrén & Snellman Oy | Finland | Private |
| Asiarails Holdings Limited | Hong Kong | Private |
| ASISTENCIA TECNICA INDUSTRIAL SAE | Spain | Private |
| asknet AG Electronic Business Solutions | Germany | Private |
| ASML Korea Co., Ltd. | South Korea | Private |
| ASO INFORMATION SYSTEM CO.,LTD. | Japan | Private |
| ASOC CIEMAT ENRESA | Spain | Private |
| ASPECT CONTRACTS (ASBESTOS) LTD | United Kingdom | Private |
| Aspect Software GmbH | Germany | Private |
| ASPECT SOFTWARE UK LTD | United Kingdom | Private |
| Aspem Spa | Italy | Private |
| AspenTech Canada Ltd | Canada | Private |
| ASPENTECH EUROPE B.V. | Netherlands | Private |
| Aspinwall & Company Limited | India | Private |
| Asplan Viak AS | Norway | Private |
| Asplunds Bygg i Falköping AB | Sweden | Private |
| Asprecise Pte Ltd | Singapore | Private |
| ASRC Energy Services Tri Ocean Engineering Ltd | Canada | Private |
| Asrc Federal Holding Company, Llc | United States | Private |
| ASRE DANESH AFZAR COMPANY | Iran | Private |
| Asset Equity Group, Inc. (UT) | United States | Private |
| Asset Management Outsourcing Inc | United States | Private |
| ASSISTANCE AERONAUTIQUE ET AEROSPATIALE | France | Private |
| ASSISTANCE-CONSEIL-TECHNIQUE- INFORMATIQU | France | Private |
| ASSMANN BERATEN + PLANEN GmbH | Germany | Private |
| Associant Technology Inc | Japan | Private |
| Associated Aviation Underwriters Inc | United States | Private |
| Associated Construction Distributors International Inc | United States | Private |
| Associated Engineering Group Ltd | Canada | Private |
| Associated Engineers, Limited | Hong Kong | Private |
| Associated Newspapers North America, Inc | United States | Private |
| Associated Nursing Services plc | United Kingdom | Private |
| Associated Press | United States | Private |
| ASSOCIATION DOMICILE-SERVICES COTE D OR | France | Private |
| ASSOCIATION GIDE LOYRETTE NOUEL | France | Private |
| Association of Christian Schools International | United States | Private |
| ASSOCIATION OF EMPLOYMENT DEVELOPMENT FOR SENIOR CITIZENS, T | Japan | Private |
| Association of Universities For Research In Astronomy Inc | United States | Private |
| Association pour la Perception, La Répartition et la Defense du | Belgium | Private |
| ASSOCIAZIONE ITALIANA METALLURGIA | Italy | Private |
| ASSOCIAZIONE REGIONALE ALLEVATORI DELLA SARDEGNA | Italy | Private |
| Assurance Technology Corp | United States | Private |
| ASSYSTEM FACILITIES | France | Private |
| ASSYSTEM FRANCE | France | Private |
| ASSYSTEM UK LTD | United Kingdom | Private |
| ASTECH, K.K. | Japan | Private |
| Astek | France | Private |
| ASTEK SUD EST | France | Private |
| ASTELLAS PHARMA LTD. | United Kingdom | Private |
| Aster | France | Private |
| Asterand, Inc. | United States | Private |
| ASTEURO SRL | Italy | Private |
| Astex Therapeutics Ltd. | United Kingdom | Private |
| Astm International | United States | Private |
| ASTON | France | Private |
| Aston Group (Michigan) Inc | United States | Private |
| Astor Johansson Bygg AB | Sweden | Private |
| ASTRAZENECA PHARMACEUTICALS (IRELAND) LTD | Republic of Ireland | Private |
| Astro Aerospace | United States | Private |
| ASTRO Datensysteme AG | Germany | Private |
| Astron Buildings GmbH | Germany | Private |
| AT KEARNEY SPA | Italy | Private |
| At&t Global Network Services Belgium Luxembourg BVBA | Belgium | Private |
| At&t Global Network Services Brasil Ltda. | Brazil | Private |
| AT&T Global Network Services Inc | United States | Private |
| AT&T Istel S.A. | France | Private |
| At&T Technical Services Company, Inc | United States | Private |
| AT.HOME NATIONWIDE LTD | United Kingdom | Private |
| ATAG Ernst & Young AG | Switzerland | Private |
| ATAL Engineering Limited | Hong Kong | Private |
| ATALLAH COLIN JOSLOVE MARQUE MICHEL | France | Private |
| Atco I-Tek Inc | Canada | Private |
| ATCS, PLC | United States | Private |
| Atea Holding AB | Sweden | Private |
| Atea Holding AB | Sweden | Private |
| Ateim | France | Private |
| Atek Manufacturing Llc | United States | Private |
| Atel Gebäudetechnik AG | Switzerland | Private |
| ATELIER INDUST AERONAUT CLERMONT FD | France | Private |
| ATELIER INDUST AERONAUT DE BORDEAUX | France | Private |
| ATELIERS JEAN NOUVEL | France | Private |
| ATENTO TELESERVICIOS ESPANA S.A. | Spain | Private |
| ATESTA GROUP LTD | United Kingdom | Private |
| Atex Media Command Inc | United States | Private |
| ath Power Consulting Corporation | United States | Private |
| Athena Health Care Associates, Inc | United States | Private |
| Athena Neurosciences | United States | Private |
| ATI Systems International, Inc. | United States | Private |
| Atic Services | France | Private |
| ATIS AVIATION | France | Private |
| Atis Real Weatheralls Ltd | United Kingdom | Private |
| Atk Elkton, Llc | United States | Private |
| Atk Missile Systems Company Llc | United States | Private |
| Atkins China Limited | Hong Kong | Private |
| Atkins Danmark A/S | Denmark | Private |
| ATKINS LTD | United Kingdom | Private |
| ATKINS PLANNING & MANAGEMENT CONSULTANTS LTD | United Kingdom | Private |
|
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