Alphabetical company index for letter/character "A", page 32 of 63
- American Science & Engineering Inc.
- American Security Programs
- American Sentinel University
- American Sentry Guard
- American Shared Hospital Services
- American Software Inc.
- American Solar Electric
- American Spectrum Realty Inc.
- American States Water Co.
- American Steel
- American Substance Abuse Professionals
- American Superconductor Corp.
- American Technologies
- American Technology Corp.
- American Telecom Services Inc.
- American Tire Distributors
- American Tower Corp.
- American Unit
- American University
- American University in Puerto Rico
- American Vanguard Corp.
- American Vinyl Concepts
- American Water
- American West Bancorp
- American Woodmark Corp.
- Americarx.com
- AmericasBank Corp.
- AmeriCredit Corp.
- Amerigas Partners L.P.
- Amerigo Resources LTD
- Amerigon Inc.
- AMERIGROUP Corp.
- AmeriHealth
- Ameriprise Financial Inc.
- AmeriQuest Transportation Services
- Ameris Bancorp
- AMERISAFE Inc.
- AmeriServ Financial Inc.
- AmeriSpec
- Ameristar Casinos Inc.