Lista Ong-urilor din Harghita
| Denumire | Județ | Localitate ▲ ▼ |
| Asociatia Eurosal Toplita | Harghita | Toplita |
| Asociatia Eustress | Harghita | Miercurea Ciuc |
| Asociatia Eutikhus | Harghita | Ighiu |
| Asociatia Eventera | Harghita | Miercurea Ciuc |
| Asociatia Exar Consult | Harghita | Odorheiu Secuiesc |
| Asociatia Explorer | Harghita | Lacu Rosu |
| Asociatia Extreme Bike | Harghita | Odorheiu Secuiesc |
| Asociatia Extreme Nature | Harghita | Gheorgheni |
| Asociatia Face To Face Egyesulet | Harghita | Dealu |
| Asociatia Falusi Vendegszeretok Egyesulete Lovete | Harghita | Lueta |
| Asociatia Familia Kolping | Harghita | Cristuru Secuiesc |
| Asociatia Familia Kolping | Harghita | Gheorgheni |
| Asociatia Familia Kolping | Harghita | Odorheiu Secuiesc |
| Asociatia Familia Kolping | Harghita | Dealu |
| Asociatia Familia Kolping | Harghita | Toplita |
| Asociatia Familia Kolping | Harghita | Sanmartin |
| Asociatia Familia Kolping Borzont | Harghita | Borzont |
| Asociatia Familia Kolping Krisztus Kiraly | Harghita | Plaiesii De Jos |
| Asociatia Familiilor Mari Din Miercurea Ciuc Csikszereda Egyesulet A Nagycsaladokert | Harghita | Miercurea Ciuc |
