Which Nordic country displays a blue flag with a yellow Scandinavian cross?

Sweden

The Swedish flag, with its yellow Scandinavian cross on a blue background, is directly inspired by the national emblem and reflects an important part of Swedish cultural identity. The cross represents Christianity, while the blue and yellow colors have been the colors of Sweden since the 16th century, possibly inspired by the royal arms. This flag symbolizes the history, tradition, and values of Sweden, playing a central role during national celebrations and sports events.