Ahijärv is the name of several lakes in Estonia:
- Ähijärv, lake in Antsla Parish, Võru County
- Küti Ahijärv, lake in Lasva and Võru Parish, Võru County
- Lääniste Ahijärv, lake in Võnnu Parish, Tartu County
- Piigandi Ahijärv, lake in Kanepi Parish, Põlva County
| This disambiguation page lists articles about distinct geographical locations with the same name.
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