Mudéjar art, also known as Mudéjar style, refers to a type of ornamentation and decoration used in the Iberian Christian kingdoms, primarily between the 13th and 16th centuries. It was applied to Romanesque, Gothic, and Renaissance architectural styles as constructive, ornamental, and decorative motifs derived from those that had been brought to or developed in Al-Andalus. These motifs and techniques were also present in the art and crafts, especially Hispano-Moresque lustreware that was once widely exported across Europe from southern and eastern Spain at the time.

The term Mudejar art was coined by the art historian José Amador de los Ríos y Serrano in reference to the Mudéjars who played a leading role in introducing Islamic derived decorative elements into the Iberian Christian kingdoms. The Mudéjars were the Muslims who remained in the former areas of Al-Andalus after Christian reconquest in the Middle Ages and were able to practice their religion to a limited degree. Therefore, Mudéjar art is valuable in that it represents peaceful coexistence between Muslims and Christians during the medieval era, although it should be noted all Muslims and Jews in Spain eventually were forced to convert to Christianity or exiled between the late 1400s and early-to-mid-1500s.

The Mudéjar decorative elements were developed in Iberia specially in the context of historic architecture. There was a revival in the late 19th and early 20th century Spain and Portugal as Neo-Mudéjar style.