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- New Tecumseth Public Library
- Newmarket Public Library
- Niagara Falls Public Library
- Niagara-on-the-Lake Public Library
- Ninda-kiKaendjigae-Wigammik First Nation Public Library
- Nipigon Public Library
- Norfolk County Public Library
- North Bay Public Library
- North Grenville Public Library
- North Himsworth Public Library
- North Kawartha Public Library
- North Perth Public Library
- North York Central Library
Read more about this topic: List Of Public Libraries In Ontario