The English River is a tributary of the Iowa River in southeastern Iowa in the United States. The main stem of the river is 37.4 miles (60.2 km) long. Including its longest headwaters tributary, the North English River, the total length increases to 89.2 miles (143.6 km). Via the Iowa River, it is part of the Mississippi River watershed. The Deep River is a minor tributary of the English River. The towns of North English, South English and Deep River are named for the English and Deep rivers.

The Iowa River is a tributary of the Mississippi River in the state of Iowa in the United States. It is about 323 miles (520 km) long and is open to small river craft to Iowa City, about 65 miles (105 km) from its mouth. Its major tributary is the Cedar River.