Lista Ong-urilor din Harghita
| Denumire | Județ | Localitate ▲ ▼ |
| Asociatia Halloka Egyesulet | Harghita | Nadejdea |
| Asociatia Csikajnadi Ifjusagi Szervezet Csisz | Harghita | Nadejdea |
| Asociatia Szekelymuzsnai Nok Egyesulete | Harghita | Mujna |
| Asociatia Viharsarok | Harghita | Mujna |
| Asociatia Nagykoz | Harghita | Mujna |
| Asociatia Cultural Sportiva Mozogjunk | Harghita | Mugeni |
| Club Sportiv Bogoz (mugeni) | Harghita | Mugeni |
| Asociatia Patronala Fara Scop Lucrativ Gaz Lutita | Harghita | Mugeni |
| Asociatia Equilibrum | Harghita | Mugeni |
| Asociatia De Binefacere Cologny | Harghita | Mugeni |
| Asociatia Sekler Sound | Harghita | Mugeni |
| Asociatia Pentru Comuna Mugeni Bogoz Kozsegert Egyesulet | Harghita | Mugeni |
| Fundatia Pro Agra | Harghita | Mugeni |
| Fundatia Pro Life 2000 | Harghita | Mugeni |
| Fundatia Schola Cantorum | Harghita | Mugeni |
| Asociatia Crescatorilor De Taurine Tarnava | Harghita | Mugeni |
| Asociatia Patronala Fara Scop Lucrativ Metan Alunis | Harghita | Mugeni |
| Asociatia Szekelydoboert | Harghita | Mugeni |
| Asociatia Pagyvan Tuzolto Egyesulet | Harghita | Mugeni |
| Asociatia Pas Agromec Sa | Harghita | Mugeni |
