Madre Vieja River
Location of mouth
Native name	Río Madre Vieja (Spanish)
Location
Country	Guatemala
Physical characteristics
Source
• location	Guatemala (El Quiché, Sololá, Chimaltenango, Suchitepéquez)
• coordinates	14°48′16″N 91°05′43″W / 14.804343°N 91.095371°W / 14.804343; -91.095371 (Sources Río Madre Vieja)
• elevation	2,400 m (7,900 ft)
Mouth
• location	Pacific Ocean
• coordinates	14°00′14″N 91°25′49″W / 14.003866°N 91.430283°W / 14.003866; -91.430283 (Mouth of the Río Madre Vieja)
• elevation	0 m (0 ft)
Length	126 km (78 mi)
Discharge
• average	8 m3/s (280 cu ft/s) (at Palmira)

The Río Madre Vieja (Spanish pronunciation: [ˈmaðɾe ˈβjexa]) is a river in southwest Guatemala. Its sources are located in the Sierra Madre mountain range, on the border of the departments of El Quiché, Sololá, and Chimaltenango. It flows southwards through the coastal lowlands of Suchitepéquez and Escuintla to the Pacific Ocean.^[1]

The Madre Vieja river basin covers a territory of 1,007 square kilometres (389 sq mi).^[2]