Sultan Kudarat

Formerly known as Nuling, it became the de jure capital of the former Maguindanao province in 1977. It served as the legislative capital of Maguindanao in 2011 as it plays host to the Maguindanao Provincial Board, previously housed in the former capitol at Shariff Aguak. This restored its previous status as provincial capital, which was shared with Buluan which served as the executive capital. In 2022, Republic Act 11550 officially designated Datu Odin Sinsuat as the official capital of Maguindanao del Norte and Buluan as official capital of Maguindanao del Sur. Once a provincial capitol is erected in Datu Odin Sinsuat, the legislature will move to that municipality.