The national flag of Scotland is known as the Saltire or St. Andrew's Cross. It features a white diagonal cross on a blue background, representing the patron saint of Scotland, St. Andrew. The design is one of the oldest flags in the world, with its origins dating back to the 9th century. In addition to the Saltire, there are other flags associated with Scotland, such as the Royal Banner of Scotland, which features a red lion on a yellow background. This banner is often used by the Scottish monarchy and represents the historical kingdom of Scotland.