Katav-Ivanovsk is a town located in the Chelyabinsk Oblast of Russia. It serves as the administrative center of the Katav-Ivanovsky District and is situated on the banks of the Katav River, approximately 321 kilometers (199 miles) southwest of the oblast's administrative center, Chelyabinsk.
According to census data, the population of the town has fluctuated over recent decades. The 2010 census recorded a population of 17,630, following a figure of 20,162 in 2002 and 24,972 during the 1989 Soviet census.