Cerna
Location
Country	Romania
Counties	Tulcea County
Villages	Cerna, Traian
Physical characteristics
Mouth	Danube
• location	Lake Traian
• coordinates	45°01′56″N 28°13′24″E / 45.0323°N 28.2234°E / 45.0323; 28.2234
Basin features
Progression	Lake Traian→ Danube→ Black Sea
Tributaries
• left	Iaila
• right	Megina

The Cerna is a small right tributary of the Danube in Romania. It flows into Lake Traian, which is connected with the Danube, in the village Traian.^[1]