The Flag of Ciudad Real, Spain, is the official symbol representing this Spanish city. It consists of three vertical stripes arranged in the proportions 2:1:2. The left and right stripes are red, while the central one is yellow. This flag design was officially adopted on June 9, 1987. The colors red and yellow have historical significance as they were used during the reign of the Dukes of Alburquerque, who ruled over Ciudad Real in the 15th century. The flag serves to identify the city and its people both domestically and internationally.