The Flag of Kaluga is the official symbol representing the administrative center of Kaluga Oblast, a federal subject of Russia. Adopted on May 15, 2003, it consists of two horizontal bands: green (top) and white (bottom), with a yellow radial sun in the center. The design reflects historical ties to the Grand Duchy of Moscow, as well as symbolizing prosperity, growth, and the region’s agricultural traditions. The Flag of Kaluga serves as an emblem of regional identity within Russia and beyond.