| Forge River | |
|---|---|
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 | |
| Location | |
| Country | United States of America |
| Region | Mastic and Moriches, New York |
| Physical characteristics | |
| Source | |
| • location | Moriches Bay |
| Mouth | |
• coordinates | 40°46′38″N 72°48′39″W / 40.77722°N 72.81083°W |
| Length | 3.2 nmi (5.9 km) |
Forge River is a partially mixed estuary on the south shore of Long Island in the township of Brookhaven, Suffolk County, New York.