| Bighead River | |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Map Caption: | Location of the mouth of the Bighead River in southern Ontario |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Ontario |
| Subdivision Type4: | County |
| Subdivision Name4: | Grey |
| Subdivision Type5: | Municipalities |
| Source1: | Forest |
| Source1 Location: | Chatsworth |
| Source1 Coordinates: | 44.4156°N -80.8392°W |
| Source1 Elevation: | 328m (1,076feet) |
| Mouth: | Lake Huron |
| Mouth Location: | Meaford |
| Mouth Coordinates: | 44.6078°N -80.5892°W |
| Mouth Elevation: | 176m (577feet) |
| River System: | Great Lakes Basin |
| Tributaries Right: | East Minniehill Creek, Minniehill Creek, Rocklyn Creek, Walters Creek |
The Bighead River is a river in Grey County in southern Ontario, Canada, that flows from the Niagara Escarpment between the communities along Ontario Highway 10 of Arnott and Holland Centre in the township of Chatsworth to empty into Nottawasaga Bay, an inlet of Georgian Bay on Lake Huron, at Meaford.
The river crosses the Bruce Trail in the valley between the Spey River Forest Area and the Walters Falls Conservation Area.[1]