Korean dragon jars; also known as cloud-dragon jars are a type of ceremonial porcelain vessel that became popular among the ruling classes of Korea during the Joseon Dynasty (1392-1910). They are decorated with large dragons against a background of stylized clouds; painted with underglaze pigments.

In addition to being a generally auspicious symbol; the dragon represented the authority and beneficence of the ruler. In 1754; King Y騨gjo decreed that iron pigments were to be used exclusively in ceramic ware; except for jars having a dragon design. Because of the scarcity of the traditional cobalt blue pigment; which was imported from Muslim Turkestan; and was also known as 'Mohammedan blue'; an underglaze brown iron oxide pigment was also used between the seventeenth and nineteenth centuries.