Lista Ong-urilor din Harghita
| Denumire | Județ | Localitate ▲ ▼ |
| Fundatia Amazon | Harghita | Odorheiu Secuiesc |
| Asociatia Ice Rink Szekelyudvarhely | Harghita | Odorheiu Secuiesc |
| Asociatia Utca | Harghita | Odorheiu Secuiesc |
| Asociatia Club Sportiv Siraly Sport Egyesulet | Harghita | Odorheiu Secuiesc |
| Fundatia Famaraj | Harghita | Odorheiu Secuiesc |
| Asociatia Rega Egyesulet | Harghita | Odorheiu Secuiesc |
| Asociatia Szekelyudvar | Harghita | Odorheiu Secuiesc |
| Asociatia Moti Val | Harghita | Odorheiu Secuiesc |
| Asociatia Szent Anna Es Joachim Noszovetseg | Harghita | Odorheiu Secuiesc |
| Asociatia Hataron Tuli Magyar Fiatalok Kulturalis Egyesulete | Harghita | Odorheiu Secuiesc |
| Asociatia Civica Szekelyudvarhelyert Erdemes | Harghita | Odorheiu Secuiesc |
| Fundatia Jeunesse | Harghita | Odorheiu Secuiesc |
| Asociatia Harmont | Harghita | Odorheiu Secuiesc |
| Fundatia Globus | Harghita | Odorheiu Secuiesc |
| Asociatia Agricultorilor Maghiari Teritorial Odorhei | Harghita | Odorheiu Secuiesc |
| Asociatia Culturala Pro Beclean | Harghita | Odorheiu Secuiesc |
| Asociatia Budvar K.d.e. | Harghita | Odorheiu Secuiesc |
| Asociatia Clear Water | Harghita | Odorheiu Secuiesc |
| Fundatia Il Cuore | Harghita | Odorheiu Secuiesc |
| Asociatia Volkswagen Boxer Klub | Harghita | Odorheiu Secuiesc |
