The Demak Sultanate was a Javanese Muslim state located on Java's north coast in Indonesia, at the site of the present-day city of Demak. A port fief to the Hindu-Buddhist Majapahit kingdom thought to have been founded in the last quarter of the 15th century, it was influenced by Islam brought by Muslim traders from China, Gujarat, Arabia and also Islamic kingdoms in the region, such as Samudra Pasai, Malacca and Bani (Muslim) Champa. The sultanate was the first Muslim state in Java, and once dominated most of the northern coast of Java and southern Sumatra.

The Javanese are an Austronesian ethnic group native to the central and eastern part of the Indonesian island of Java. With more than 100 million people, Javanese people are the largest ethnic group in both Indonesia and in Southeast Asia as a whole. Their native language is Javanese, it is the largest of the Austronesian languages in number of native speakers and also the largest regional language in Southeast Asia. The Javanese as the largest ethnic group in the region have dominated the historical, social, and political landscape in the past as well as in modern Indonesia and Southeast Asia.