The Luha (Ukrainian: Луга, Polish: Ług) is a river in Ukraine and a right tributary of the Bug.

Its source is located near the village of Kolpytiv in the Horokhiv Upland.

In its upper reaches, the Luha runs mainly in a western, northwestern direction, and later northwards.

Biggest tributaries: Luha-Svynoryika, Svynoryika, Rylovytsia (right side); Strypa (left side) Character of the river is plain as it flows through swampy floodplains.

[1] The river was widely used for sugar industry in recent times.