Majapahit was a Javanese Hindu-Buddhist thalassocratic empire in Southeast Asia that was based on the island of Java. It existed from 1293 to circa 1527 and reached its peak of glory during the era of Hayam Wuruk, whose reign from 1350 to 1389 was marked by conquests that extended throughout Southeast Asia. His achievement is also credited to his prime minister, Gajah Mada. According to the Nagarakretagama (Desawarñana) written in 1365, Majapahit was an empire of 98 tributaries, stretching from Sumatra to New Guinea; consisting of present-day Indonesia, Singapore, Malaysia, Brunei, southern Thailand, Timor Leste, southwestern Philippines (in particular the Sulu Archipelago) although the scope of Majapahit sphere of influence is still the subject of debate among historians. The nature of Majapahit relations and influences upon its overseas vassals, and also its status as an empire are still provoking discussions.

Majapahit was one of the last major Hindu-Buddhist empires of the region and is considered to be one of the greatest and most powerful empires in the history of Indonesia and Southeast Asia. It is sometimes seen as the precedent for Indonesia's modern boundaries.Its influence extended beyond the modern territory of Indonesia and has been the subject of many studies.