| Name | Company | Active Certifications | |
| Jan Mae P. Ocampo | |
jpocampo@pldt.com.ph | MEF-SNCP |
| Dominik Ogrodnik | |
dominik.ogrodnik@amartus.com | *No Active Certifications at this time* |
| Maxime Ohmann | BT | maxime.ohmann@bt.com | MEF-CECP |
| Cameron Olivas | |
cameron_olivas@cable.comcast.com | MEF-SDCP |
| Roberto Oliveira | N/A | roberto.c.o@gmail.com | *No Active Certifications at this time* |
| Diego Oliver | |
diego.m.oliver@outlook.com | *No Active Certifications at this time* |
| Nerizza Mae T. Olpot | |
ntolpot@pldt.com.ph | MEF-SNCP |
| Ann Margaret Onipa | |
ajonipa@pldt.com.ph | MEF-SNCP |
| Adrian Onod | |
aeonod@pldt.com.ph | MEF-CECP |
| Tito Onza | |
tuonza@pldt.com.ph | MEF-CECP, MEF-SNCP |
| Jaysam R. Opanes | |
jropanes@pldt.com.ph | MEF-CECP |
| Travis Opdahl | |
topdahl@dakotacarrier.com | MEF-CECP |
| Eric Ortheau | Cisco Systems | eriorthe@cisco.com | *No Active Certifications at this time* |
| Karyn Osiecki | |
kosiecki@everstream.net | MEF-CECP |
| Adedeji Oyawoye | Ericsson | aoyawoye@gmail.com | *No Active Certifications at this time* |