The Krupa (Serbian Cyrillic: Крупа) river is a left tributary of the river Neretva and the main water current of Hutovo Blato, which leads the waters from Gornje Blato and Svitavsko Lake into the Neretva river near Dračevo.

The length of Krupa is 9 km with an average depth of 5 meters.

[1] The river has rich biodiversity, with numerous fish species endemic to the Neretva basin inhabiting Krupa and its lakes.

It is observed that important Salmo marmoratus, known under its vernacular name as glavatica and/or gonjavac, and endemic to the handful of rivers of the Adriatic watershed, enters these waters to spawn.

This article related to a river in Bosnia and Herzegovina is a stub.