| Name | Company | Active Certifications |
| Jan Mae P. Ocampo |  |
MEF-SNCP |
| Maxime Ohmann |  |
MEF-CECP |
| Cameron Olivas |  |
MEF-SDCP |
| Nerizza Mae T. Olpot | |
MEF-SNCP |
| Ann Margaret Onipa | |
MEF-SNCP |
| Adrian Onod | |
MEF-CECP |
| Tito Onza | |
MEF-CECP, MEF-SNCP  |
| Jaysam R. Opanes | |
MEF-CECP |
| Travis Opdahl |  |
MEF-CECP |
| Karyn Osiecki |  |
MEF-CECP |