Moorish architecture is a style within Islamic architecture which developed in the western Islamic world, including al-Andalus and what is now Morocco, Algeria, and Tunisia. Scholarly references on Islamic architecture often refer to this architectural tradition in terms such as architecture of the Islamic West or architecture of the Western Islamic lands. The use of the term "Moorish" comes from the historical Western European designation of the Muslim inhabitants of these regions as "Moors". Some references on Islamic art and architecture consider this term to be outdated or contested.

Islamic architecture comprises the architectural styles of buildings associated with Islam. It encompasses both secular and religious styles from the early history of Islam to the present day. The Islamic world encompasses a wide geographic area historically ranging from western Africa and Europe to eastern Asia. Certain commonalities are shared by Islamic architectural styles across all these regions, but over time different regions developed their own styles according to local materials and techniques, local dynasties and patrons, different regional centers of artistic production, and sometimes different religious affiliations.