Długa is a river of Poland, which flows into the Żerański Canal north of Warsaw.

Długa
Map
Location
CountryPoland
Physical characteristics
Mouth 
 • location
Żerański Canal
 • coordinates
52°21′23″N 21°02′02″E / 52.35639°N 21.03389°E / 52.35639; 21.03389
Basin features
ProgressionŻerański CanalNarewVistulaBaltic Sea

In Polish, the name of the river can be literally translated as "long".