| Alexander River | |
| Subdivision Type1: | Country |
| Length: | 10km (10miles) |
| Source1 Elevation: | 38m (125feet)[1] |
The Alexander River is a river in the Goldfields-Esperance region of Western Australia.
The river rises near Munliginup Hill and flows southerly through a nature reserve area before discharging into Alexander Bay and the Southern Ocean about 75km (47miles) east of Esperance.
The river was named in 1870 by John Forrest, who was surveying the area at the time. He named the river after his brother, Alexander Forrest, who was also a surveyor and who later became the Lord Mayor of Perth, Western Australia.