Lista Ong-urilor din Prahova
| Denumire | Județ | Localitate ▲ ▼ |
| Asociatia Hemophilia Romania | Prahova | Ploiesti |
| Asociatia Hirtia Programul Actiunii Salariatilor Pas | Prahova | Busteni |
| Asociatia Homes For Strays | Prahova | Gura Vadului |
| Asociatia Hope For Romanian Strays | Prahova | Stancesti |
| Asociatia Horeca Ploiesti | Prahova | Ploiesti |
| Asociatia Horevma | Prahova | Ploiesti |
| Asociatia Hot Shot | Prahova | Stejaru |
| Asociatia Hotel Cota 1400 P A S Sinaia | Prahova | Sinaia |
| Asociatia Humanitas | Prahova | Ploiesti |
| Asociatia Humanitas 94 | Prahova | Ploiesti |
| Asociatia Ia De Breaza | Prahova | Breaza |
| Asociatia Ianauschek Mihai Alexandru | Prahova | Ploiesti |
| Asociatia Ianksym | Prahova | Ploiesti |
| Asociatia Idea Maturation Hive | Prahova | Ploiesti |
| Asociatia Idei Pentru Viitor | Prahova | Ploiesti |
| Asociatia Iimpreuna Pentru Beatrice Alessia | Prahova | Doftana |
| Asociatia Ilinca Maria | Prahova | Ploiesti |
| Asociatia Ilinca Totul Pentru Familia Ta | Prahova | Ploiesti |
| Asociatia Ime Ioana Miruna Enache | Prahova | Baicoi |
| Asociatia Imfs Credit Car Institutie Financiar Nebancara | Prahova | Valenii De Munte |
