The Kruostas is a river of Kėdainiai district municipality, Kaunas County, central Lithuania.

The lower course goes through a deep valley beside Vaidatoniai hillfort.

The river meets the Nevėžis from the right side near Urbeliai village.

[2] The name Kruostas derives from Lithuanian word kruostas or skruostas ('cheek, eyelash, eyebrow'), further from skrosti, skersti ('to slice, to butcher').

This article related to a river in Lithuania is a stub.