| Armed Forces and Police Savings and Loan Association, Inc. (AFPSLAI) |
| Armed Forces of the Philippines |
| Armed Forces of the Philippines Educational Benefit System Office (AFP EBSO) |
| Armed Forces of the Philippines General Insurance Corp (AFPGIC) |
| ASEA Brown Boveri Inc. |
| Asia Coal Corporation |
| Asia Pro Cooperative |
| Asian Aerospace Corp. - Pampanga |
| Asian Business Solutions |
| Asian Institute of Management |
| Asian Institute of Management - Scientific Research Foundation, Inc. |
| Asiatrust Bank |
| Asipine Corporation - Pampanga |
| Assistco Energy & Industrial Corp |
| Assumption College |
| Astra Zeneca Pharmaceuticals Philippines, Inc. |
| Astral Construction & Dev't Corp. - Cebu |
| Atikha Overseas |
| Ating Familia |
| Atlas Cement Marketing Corp. |
| ATR Kim Eng Capital Partners, Inc. |
| Audio Excellence Marketing |
| Auntie Anne's |
| Australian Embassy |
| Autocheck - Pampanga |
| Avaya Philippines |
| Aventis Pharma, Inc. |
| Aviation |
| Avida Land Corp. (formerly Laguna Properties Holdings Inc) |
| Avon Cosmetics |
| Avon Metro Boutique |
| AW Gift Shoppe - Cebu |
| Ayala Agri-Asc Seed |
| Ayala Aviation Corporation |
| Ayala Business Club Cagavan De Oro |
| Ayala Business Club CALABARZON |
| Ayala Business Club Cebu |
| Ayala Business Club Central Luzon |
| Ayala Business Club Davao |
| Ayala Business Club Metro Manila East |
| Ayala Business Club Metro Manila North |
| Ayala Business Club Metro Manila South |
| Ayala Business Club Pampanga |
| Ayala Business Club Summit |
| Ayala Business Club Western Visayas |
| Ayala Center Cebu |
| Ayala Corporation |
| Ayala Financial |
| Ayala Foundation Inc. |
| Ayala Foundation USA |
