The Lukh () is a river in Ivanovo, Nizhny Novgorod and Vladimir Oblasts in Russia, a left tributary of the Klyazma (Volga's basin). The length of the river is 240 km. The area of its drainage basin is 4,450 km<sup>2</sup>. The Lukh freezes up in late November and breaks up in April.
The main tributaries are the Pechuga, Dobritsa, Landekh, Sezukh.