Lista Ong-urilor din Harghita
| Denumire | Județ | Localitate ▲ ▼ |
| Asociatia Delphi | Harghita | Odorheiu Secuiesc |
| Asociatia Homorodszentlaszloert Egyesulet | Harghita | Odorheiu Secuiesc |
| Asociatia Kerekerdo Waldorf | Harghita | Odorheiu Secuiesc |
| Asociatia It Plus | Harghita | Odorheiu Secuiesc |
| Fundatia Dr.verestoy Attila | Harghita | Odorheiu Secuiesc |
| Asociatia Vario | Harghita | Odorheiu Secuiesc |
| Fundatia Artera | Harghita | Odorheiu Secuiesc |
| Fundatia Pro Familia 4+1 | Harghita | Odorheiu Secuiesc |
| Fundatia Pro Theatrum | Harghita | Odorheiu Secuiesc |
| Fundatia Senectas | Harghita | Odorheiu Secuiesc |
| Asociatia Horatio | Harghita | Odorheiu Secuiesc |
| Asociatia Mormota Alpin Egyesulet | Harghita | Odorheiu Secuiesc |
| Asociatia Never Ever Give Up Soha Ne Add Fel | Harghita | Odorheiu Secuiesc |
| Asociatia Club Sportiv Vasas Femina Fotbal Club | Harghita | Odorheiu Secuiesc |
| Asociatia Arlequino | Harghita | Odorheiu Secuiesc |
| Asociatia Ice Rink Szekelyudvarhely | Harghita | Odorheiu Secuiesc |
| Asociatia Korrekta | Harghita | Odorheiu Secuiesc |
| Asociatia Riverenza Din Odorheiul Secuiesc | Harghita | Odorheiu Secuiesc |
| Fundatia Elo Szovet | Harghita | Odorheiu Secuiesc |
| Asociatia Redip | Harghita | Odorheiu Secuiesc |
