The Luza is a river in Oparinsky and Luzsky Districts of Kirov Oblast, Priluzsky District of the Komi Republic, and Velikoustyugsky District of Vologda Oblast in Russia. It is a right tributary of the Yug River. It is long, and the area of its drainage basin is . Its main tributaries are the Lopyu, the Porub, the Lekhta, and the Lala (all from the right). The town of Luza and the urban-type settlement of Lalsk are located on the banks of the Luza, as well as the selo of Obyachevo, the administrative center of Priluzsky District.