| Hyco River | |
| Name Other: | Tributary to Dan River |
| Map Size: | 300 |
| Pushpin Map: | USA Virginia#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Hyco River mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | North Carolina Virginia |
| Subdivision Type3: | County |
| Subdivision Name3: | Person (NC) Halifax (VA) |
| Length: | 33.55miles[1] |
| Discharge1 Location: | Dan River (John H. Kerr Reservoir) |
| Discharge1 Avg: | 407.14cuft/s at mouth with Dan River[2] |
| Source1: | confluence of Hyco Creek and South Hyco Creek |
| Source1 Location: | Hyco Lake |
| Source1 Coordinates: | 36.4831°N -79.0956°W[3] |
| Source1 Elevation: | 410feet[4] |
| Mouth: | Dan River |
| Mouth Location: | John H. Kerr Reservoir about 3 east-southeast of South Boston, Virginia |
| Mouth Coordinates: | 36.6839°N -78.7319°W |
| Mouth Elevation: | 300feet |
| Progression: | Dan River → Roanoke River → Albemarle Sound |
| River System: | Roanoke River |
| Tributaries Left: | Hyco Creek Cane Creek Powells Creek Coleman Creek Halfway Creek Hudson Branch Terrell Branch Hilly Creek |
| Tributaries Right: | South Hyco Creek Sargents Creek Ghent Creek Storys Creek Castle Creek Bowes Branch Mayo Creek Dry Creek Bluewing Creek Larkin Branch Pensions Branch Flat Branch Morris Branch |
| Waterbodies: | Hyco Lake After Bay Reservoir John H. Kerr Reservoir |
| Bridges: | Woodsdale Road, Bethel Hill Road, US 501, E Hyco Road, Kingwoods Road, Buckshoal Road, US 58 |
The Hyco River (Tutelo: Hiḳaatmani:[5]) is a tributary of the Dan River, which is a tributary of the Roanoke River. All three rivers flow through the U.S. states of North Carolina and Virginia. In Person County, North Carolina the Hyco River is impounded by a dam, forming Hyco Lake. The main part of the river flows through Allensville, North Carolina (a township of Roxboro), on Gentry's Ridge and Mill Creek roads as it flows into Virginia townships such as Alton, Virginia, and Cluster Springs, Virginia, then combining with the Dan River.
According to the USGS the Hyco River has been known by the variant names Hicootomony Creek, Hy Coyee River, Hyco Creek, and Hyco-o-tee River.