Lista Ong-urilor din Bacau
| Denumire | Județ | Localitate ▲ ▼ |
| Asociatia Alpin Club Bacau Afj | Bacau | Bacau |
| Asociatia Alpina G 21 Bacau Afj | Bacau | Bacau |
| Asociatia Alter Vita Afj | Bacau | Barati |
| Asociatia Alternativ Sport Club Afj | Bacau | Hemeius |
| Asociatia Alternative Afj | Bacau | Bacau |
| Asociatia Alternative Si Sperante In Autism Afj | Bacau | Bacau |
| Asociatia Altervisio Afj | Bacau | Traian |
| Asociatia Alumni Universitatea George Bacovia Afj | Bacau | Bacau |
| Asociatia Alumni Vasile Alecsandri Filiala Bacau Afj | Bacau | Bacau |
| Asociatia Ambasadorii Sperantei Calea Spre Cer | Bacau | Racaciuni |
| Asociatia Ambassador Club Afj | Bacau | Bacau |
| Asociatia Ambiance Afj | Bacau | Bacau |
| Asociatia Amicii Colegiului Petru Poni Afj | Bacau | Onesti |
| Asociatia Andariana | Bacau | Podu Turcului |
| Asociatia Andi Afj | Bacau | Comanesti |
| Asociatia Andomec Pas Afj | Bacau | Pancesti |
| Asociatia Anghel Tiberiu Afj | Bacau | Bacau |
| Asociatia Animal Safe Guard Afj | Bacau | Moinesti |
| Asociatia Anlocato Buhusi Afj | Bacau | Buhusi |
| Asociatia Another Chance Afj | Bacau | Podu Turcului |
