Kapitan Laut Buisan (died: 1616, reigned: 1597–c. 1616/1619), also known as Datu Katchil or Sultan Laut Buisan, was the sixth Sultan of Maguindanao in the Philippines. He was a direct descendant of Shariff Kabungsuwan, a Muslim missionary who preached Islam in the Philippines and established the sultanate after marrying a Sulu princess in the 16th century. After his death, Lanao seceded from the sultanate of Maguindanao, creating the Lanao sultanates due to the Lanao datus' disapproval of Datu Kudarat, who became his successor.