| Name | Phone | Category |
| A.M. Fadida Consulting | 202 744-5531 | Business Consulting and Specialized Services |
| A1A Vista Tech, Inc. | 888 569-4696 | Manufacturing |
| AbilityCRM | 480 726-5432 | Computer Software |
| Abrams Airborne Manufacturing | 520-887-1727 | Aerospace and Defense |
| Access Information Management | 623 478-9393 | Business Consulting and Specialized Services |
| Accounting & Finance Professionals Inc | 602 306-4473 | Human Resources and Employment |
| Accram, Inc. | 602 264-0288 | IT Services & Solutions |
| Acena Consulting, LLC | 805 426-9669 | Accounting Services |
| ACG Arizona | 480 421-0853 | Financial and Banking Services, Venture Capital Firms |
| achieveHR | 480 239-0133 | Human Resources and Employment |
| ActionCOACH Solutions | 520 505 4470 | Academic |
| Acudora, Inc | 732 485-8268 | Computer Software |
| Adaptive Strategies, Inc. | 312 802-6476 | Academic |
| ADECCO Engineering and Technical | 480 820-0128 | Business Consulting and Specialized Services |
| ADI Computer Systems | 602 863-7898 | IT Services & Solutions |
| Advanced Integration Technologies | 480-940-0036 | Manufacturing |
| Advantage Technical Resourcing | 480 614-5740 | Human Resources and Employment |
| AdVnt Biotechnologies LLC | 888 223 3269 | Biosciences |
| Agilesys | 480 289-2460 | IT Services & Solutions |
| AGM Container Controls, Inc. | 520 881-2130 | Aerospace and Defense |
| Aidant Fire and Security | 480 607-4600 | Other Services |
| Aide Solar-USA | 480 379-2810 | Environmental, Sustainable Systems |
| airband (formerly Sparkplug) | 602 648-5000 | Telecommunications |
| Airtronics | 520-881-3982 | Aerospace and Defense |
| Alerion Capital Group | 801 415-9163 | Financial and Banking Services, Venture Capital Firms |
| Alerus Bank & Trust | 480 905-2400 | Financial and Banking Services |
| All Optronics | 520 382-3263 | Aerospace and Defense |
| AmbientID | 253 857-7117 | Medical and Biotechnology |
| American Arbitration Association | 602-734-9333 | Legal Services |
| American Barcode and RFID | 602 651-1600 | Business Consulting and Specialized Services |
| American Express (Technologies) | 602-537-8500 | Financial and Banking Services |
| American Internet Services, LLC | 866 971-2656 | Internet-Related Services |
| Amphitheater Unified School District | 520 696-5218 | Academic |
| Anderson Information Systems, LLC | 480-314-4260 | Computer Consulting Services |
| Anewco | 520 751-1222 | Manufacturing |
| AP Professionals of Phoenix, LLC | 480 947-1441 | Computer Consulting Services |
| Apollo Group, Inc. | 480 966-5394 | Academic |
| Applied Computer Solutions | 714 861-2236 | Computer Software |
| Apriva | 480-421-1200 | Business Consulting and Specialized Services, IT Services & Solu |
| AQT Solar | 602 418-1196 | Environmental, Sustainable Systems |
| Architectural Resource Team, Inc | 602-307-5399 | Architectural, Interior Design, Construction |
| Arizona Association of Community Managers | 602-685-1111 | Other Support Services |
| Arizona BioIndustry Association | 480 884-1575 | NonProfit Associations |
| Arizona Broadcasters Association | 602-252-4833 | NonProfit Associations |
| Arizona Capitol Times | 602 258-7026 | Media and Entertainment |
| Arizona Center for Innovation AZCI | 520 382-3261 | Academic |
| Arizona Chamber of Commerce and Industry | 602 248-9172 | NonProfit Associations |
| Arizona Commerce Authority | 602 771-1117 | Government and Public Sector |
| Arizona Department of Education | 602 542-5212 | Academic |
| Arizona Foundation for Eye Health (AFEH) | 602 251 3400 | NonProfit Associations |
| Arizona Health-e Connection | 602 688-7200 | NonProfit Associations |
| Arizona MEP | 480 874-9100 | Business Consulting and Specialized Services |
| Arizona Public Service | 602 250-1000 | Energy and Transportation |
| Arizona Quality Alliance | 480 874-5815 | NonProfit Associations |
| Arizona Science Center | 602 716-2015 | NonProfit Associations |
| Arizona Small Business Association | 602 306-4000 | NonProfit Associations |
| Arizona Technology Enterprises | 480 884-1996 | Academic |
| Arizona Technology Investor Forum (ATIF) | 602 463-0844 | NonProfit Associations |
| Arizona U.S. Export Assistance Center - U.S. Commercial Service Center | 602 640-2513 | Government and Public Sector |
| Ascent Aviation Services Corp | 520-294-3481 | Aerospace and Defense |
| Association for Career Technical Education of AZ | 623-377-5118 | Academic |
| ASU - Ira A Fulton School of Engineering | 480 727-7761 | Academic |
| ASU – Knowledge Enterprise Development | 480 965-1225 | Academic |
| AT&T | 480 515-7263 | Telecommunications |
| ATK | 480-324-5056 | Aerospace and Defense |
| ATOMdesign, Inc. | 480 940-4598 | Engineering Design and Prototyping Services |
| Avanade | 602-689-6818 | Computer Consulting Services |
| Avirtek, Inc. | 520 977-7954 | Computer Software |
| Avnet Inc | 480 643-2000 | Computer Hardware |
| Axosoft, LLC | 480 362-1900 | Computer Software |
| Axway | 480 627-1800 | Computer Software |
| AZ Chapter of SIM | 480-513-9681 | NonProfit Associations |
| AZAquaculture | 520-382-3266 | Biosciences |
| Azinno, LLC | 520-907-5100 | Computer Software |
| AZSBDC Network | (928) 776-2008 | Academic |
| Aztera, LLC | 520-261-8378 | Engineering Design and Prototyping Services |