| Christian Island 30 | |
| Official Name: | Christian Island Indian Reserve No. 30 |
| Settlement Type: | Indian reserve |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Mapsize: | 200 |
| Coordinates: | 44.85°N -91°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Simcoe |
| Subdivision Type3: | First Nation |
| Subdivision Name3: | Beausoleil |
| Area Land Km2: | 52.13 |
| Population Footnotes: | [1] |
| Population Total: | 1249 |
| Population As Of: | 2011 |
| Population Density Km2: | 24.0 |
| Website: | www.chimnissing.ca |
Christian Island 30 is a First Nations reserve located on Christian Island in Georgian Bay, in Ontario. It is one of the reserves of the Beausoleil First Nation.
Beausoleil First Nation have resided on the island since 1856.