Nipissing may refer to the following places in Ontario, Canada:
- Lake Nipissing
- The Nipissing First Nation
- Nipissing 10, reserve of Nipissing First Nation
- Nipissing District, a census division
- West Nipissing, an incorporated municipality in Nipissing District
- Nipissing River in Algonquin Provincial Park, a tributary of the Petawawa River
- Nipissing Township, in Parry Sound District
- Nipissing University in North Bay
- Electoral districts:
- Nipissing (electoral district), a former federal electoral district
- Nipissing (provincial electoral district), a current provincial electoral district
- Nipissing—Timiskaming, a current federal electoral district