| Alderville | |
| Official Name: | Alderville First Nation Indian Reserve |
| Settlement Type: | Indian reserve |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Mapsize: | 200 |
| Coordinates: | 44.1833°N -82°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | County |
| Subdivision Name2: | Northumberland |
| Subdivision Type3: | First Nation |
| Subdivision Name3: | Alderville |
| Leader Title: | Chief |
| Leader Name: | Taynar Simpson |
| Area Land Km2: | 12.59 |
| Population Footnotes: | [1] |
| Population Total: | 495 |
| Population As Of: | 2016 |
| Population Density Km2: | 39.3 |
| Timezone: | EST |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
Alderville is one of two reserves of the Alderville First Nation, along with Sugar Island 37A. Alderville consists of six non-contiguous areas surrounded by the township of Alnwick/Haldimand. It was previously known as Alderville 37.