The Sonderend River, also known as the Riviersonderend (Afrikaans for River without an end), is a main tributary of the Breede River, located in Western Cape Province, South Africa. The village of Riviersonderend is believed to have taken its name from the river.
| Sonderend River | |
|---|---|
 The River in flood | |
  | |
| Etymology | Afrikaans/Dutch for "River without an end" |
| Location | |
| Country | South Africa |
| Province | Western Cape |
| Physical characteristics | |
| Source | |
| • location | Near Villiersdorp |
| Mouth | Breede River |
• location | Between Stormsvlei and Swellendam |
• coordinates | 34°4′14″S 20°17′7″E / 34.07056°S 20.28528°E |
• elevation | 84 m (276 ft) |
| Length | 115 km (71 mi) |