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Achwa River
Aswa River
Achwa River is located in Uganda
Achwa River
Location of the mouth in Uganda
Location
CountryUganda, South Sudan
Physical characteristics
Mouth 
 • coordinates
3°44′52″N 31°55′25″E / 3.7478°N 31.9237°E / 3.7478; 31.9237

The Achwa River is a river of Uganda in eastern Africa. It flows through the northern central part of the country, draining much of Uganda's northern plateau and northeastern highlands, before crossing the border into South Sudan where it joins the White Nile. In South Sudan it is known as the Aswa River.