| Itaquai River | |
|---|---|
.jpg) | |
  | |
| Location | |
| Country | Brazil |
| Physical characteristics | |
| Source | |
| • location | Amazonas state |
| Mouth | |
• coordinates | 4°20′S 70°12′W / 4.333°S 70.200°W |
The Itaquai River is a river of the upper Amazon Basin. It forms the eastern boundary of Atalaia do Norte municipality in the Amazonas state of north-western Brazil. Its main tributary is the Rio Branco. Downstream it joins the Ituí River to form the upper Solimões.