| National College of Science and Technology - Cavite |
| National Economic Development Authority |
| National Home Mortgage & Finance Corp - Davao |
| National Irrigation Administration - Davao |
| National Movement of Young Legislators (Nat'l Congress-Chapters/Council) |
| National Reinsurance Corporation of the Philippines |
| National Youth Commission |
| NEC Philippines |
| Nestle Philippines |
| Net @ 10th Computer |
| New Central Restaurant - Cebu |
| New Millenium Investments |
| New Mindanao Shopping Center - Cebu |
| New PMC Construction & Industrial Supply |
| New Zealand Milk |
| Nexus Technologies Inc |
| NG Khai Development Corp. - Cebu |
| Nicanor P. Jacinto Foundation |
| Nice Future Sales Corporation - Cebu |
| Nissan Car Lease Phils Inc |
| Nitz-Teo-My Shoe Rack - Pampanga |
| NMYL-Davao Del Norte |
| No. One Commercial |
| Nokia Philippines |
| NORFIL Foundation |
| Notre Dame of Marbel University - Davao |
| NSG Micro Optics Philippines |
| NTC Import-Export, Inc. - Cebu |
| O.T. Kang Scholarship Foundation |
| Oakwood Asia Pacific |
| Oakwood Premier Ayala Center |
| Oceanic Gifts & Jewelry Inc |
| Office of Representative Gilbert Remulla |
| Office of the President (Gloria M. Arroyo) |
| Office of the Treasurer - Pampanga |
| Office of Vice President (Gloria Arroyo) |
| Okeelanta Corp. - Pampanga |
| Okphil Inc. |
| Oliver's Sandwiches |
| Omni Aviation - Pampanga |
| OOCL Philippines, Inc. |
| Optimum Health Care |
| Orchard Golf & Country Club - Cavite |
| Orient Freight Int'l Inc. - Cebu |
| Oriental Assurance |
| Orix Metro Leasing & Finance Corp |
| Oro China - Cebu |
| Ortigas & Co Ltd Partnership |
| Ortigas Foundation |
| Ottawa Freight Corp. |
