John Balliol or John de Balliol, known derisively as Toom Tabard, was King of Scots from 1292 to 1296. Little is known of his early life. After the death of Margaret, Maid of Norway, Scotland entered an interregnum during which several competitors for the Crown of Scotland put forward claims. Balliol was chosen from among them as the new King of Scotland by a group of selected noblemen headed by King Edward I of England.

A tabard is a type of short coat that was commonly worn by men during the late Middle Ages and early modern period in Europe. Generally worn outdoors, the coat was either sleeveless or had short sleeves or shoulder pieces. In its more developed form it was open at the sides, and it could be worn with or without a belt. Though most were ordinary garments, often work clothes, tabards might be emblazoned on the front and back with a coat of arms (livery), and in this form they survive as the distinctive garment of officers of arms.