Lista Ong-urilor din Constanta
| Denumire | Județ | Localitate ▲ ▼ |
| Asociatia Helping Birds | Constanta | Navodari |
| Asociatia Heracleea | Constanta | Constanta |
| Asociatia Hic Et Ubique | Constanta | Constanta |
| Asociatia Hidroedil Sa | Constanta | Constanta |
| Asociatia Hippico | Constanta | Constanta |
| Asociatia Hobby | Constanta | Constanta |
| Asociatia Horseland Navodari | Constanta | Constanta |
| Asociatia Horticultorul Ostrov | Constanta | Ostrov |
| Asociatia House Of Education And Innovation (hei) | Constanta | Constanta |
| Asociatia Humanitae | Constanta | Constanta |
| Asociatia I M A Single Dog | Constanta | Ovidiu |
| Asociatia I.c.bratianu | Constanta | Mamaia |
| Asociatia I.n. Roman | Constanta | Constanta |
| Asociatia Ia De La Malul Marii | Constanta | Mangalia |
| Asociatia Ideatelier | Constanta | Constanta |
| Asociatia Idei Si Fapte Bune | Constanta | Constanta |
| Asociatia Ilie Daria Maria | Constanta | Seimeni |
| Asociatia Iliria Alaturi De Albanezi | Constanta | Eforie Nord |
| Asociatia Impotriva Abuzurilor Bancilor Si Asiguratorilor | Constanta | Ovidiu |
| Asociatia Impreuna Aducem Bucurie | Constanta | Constanta |
