| Thomas | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | Western Australia |
| Subdivision Type3: | Region |
| Subdivision Name3: | Gascoyne |
| Length: | 127km (79miles) |
| Discharge1 Location: | mouth |
| Source1: | Teano Range |
| Source1 Location: | south of Double Peak |
| Source1 Coordinates: | -24.6378°N 117.1703°W |
| Source1 Elevation: | 463m (1,519feet) |
| Mouth: | confluence with the Gascoyne River |
| Mouth Location: | near Landor Station homestead |
| Mouth Coordinates: | -24.7258°N 116.2506°W |
| Mouth Elevation: | 294m (965feet) |
| River System: | Gascoyne River catchment |
| Custom Label: | National park |
| Extra: | [1] |
The Thomas River is a river in the Gascoyne region of Western Australia.
The headwaters of the river rise south of Double Peak and flows westwards, joined by two minor tributaries; Coondoondoo Creek and Pink Hills Creek. The river forms its confluence with the Gascoyne River near the Police Station Woolshed. The Thomas flows through the Murrumburra Pool on its way to the Gascoyne. The river descends over its 127km (79miles) course.[1]
Significant gold and tin deposits have been found in the Thomas River Gascoyne gold fields.[2]