title: Modder River (disambiguation)
text: # Modder River (disambiguation)
  
  The Modder River is in South Africa, forming part of the border between the Northern Cape and the Free State provinces.
  
  Modder River may also refer to:
  
  * Modder River, Northern Cape, a small town in the Northern Cape
  * Battle of Modder River, an 1899 battle of the Second Boer War
  