The Confederation of Madja-as was a legendary pre-colonial supra-baranganic polity on the island of Panay in the Philippines. It was mentioned in Pedro Monteclaro's book titled Maragtas. It was supposedly created by Datu Sumakwel to exercise his authority over all the other datus of Panay. Like the Maragtas and the Code of Kalantiaw, the historical authenticity of the confederation is disputed, as no other documentation for Madja-as exists outside of Monteclaro's book. However, the notion that the Maragtas is an original work of fiction by Monteclaro is disputed by a 2019 Thesis, named "Mga Maragtas ng Panay: Comparative Analysis of Documents about the Bornean Settlement Tradition" by Talaguit Christian Jeo N. of the De La Salle University who stated that, "Contrary to popular belief, the Monteclaro Maragtas is not a primary source of the legend but is rather more accurately a secondary source at best" as the story of the Maragtas also appeared in the Augustinian Friar, Rev. Fr. Tomas Santaren’s Bisayan Accounts of Early Bornean Settlements Additionally, the characters and places mentioned in the Maragtas book, like Rajah Makatunaw and Madj-as can be found in Ming Dynasty Annals and Arabic Manuscripts. However, the written dates go earlier since Rajah Makatunaw was recorded to have been from 1082 AD and was a descendant of Seri Maharajah while the Code of Maragtas, a separate work from the Maragtas book, placed him at the 1200s.

In early Philippine history, barangay is the term historically used by scholars to describe the complex sociopolitical units that were the dominant organizational pattern among the various peoples of the Philippine archipelago in the period immediately before the arrival of European colonizers. Academics refer to these settlements using the technical term "polity", but they are usually simply called "barangays".