| Amapá River | |
| Pushpin Map: | Brazil |
| Source1 Location: | Amazonas |
| Mouth Location: | Matupiri River |
| Mouth Coordinates: | -5.2492°N -61.4291°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Amapá River (Portuguese: Rio Amapá) is a river of the state of Amazonas, Brazil.It is a tributary of the Matupiri River.
The Amapá River rises in the Lago do Capanã Grande Extractive Reserve, created in 2004.It flows across the reserve in an east of northeast direction, crosses the Rio Amapá Sustainable Development Reserve and then flows through the Matupiri State Park, where it joins the Matupiri River.