The Red Rose of Lancaster was the heraldic badge adopted by the royal House of Lancaster in the 14th century. In modern times it symbolises the county of Lancashire. The exact species or cultivar which it represents is thought to be Rosa gallica officinalis.

The rose is a common device in heraldry. It is often used both as a charge on a coat of arms and by itself as an heraldic badge. The heraldic rose has a stylized form consisting of five symmetrical lobes, five barbs, and a circular seed. The rose is one of the most common plant symbols in heraldry, together with the lily, which also has a stylistic representation in the fleur-de-lis.