The Flag of Sumy Oblast, Ukraine, is the official heraldic symbol representing the administrative region located in northeastern Ukraine. Adopted on February 20, 1997, the flag features two horizontal bands of equal width. The upper band is colored blue, symbolizing loyalty and fidelity, while the lower band is yellow, representing wealth and prosperity. In the center of the blue field is a red trident with three arms extending equally from a central point, which serves as the official emblem of Ukraine. The flag’s design reflects both the regional and national identities, emphasizing the historical ties between Sumy Oblast and the broader Ukrainian landscape.