Đoan Nam Vương Trịnh Khải was one of the Trịnh lords in northern Vietnam.
Career
He was succeeded by the last of the lords, Trịnh Bồng.
Achievements
He fought against the armies of the infant Trịnh Cán to win leadership of the northern warlords (reigning 29 November 1782 - July 1786), but was himself defeated by the southern warlord, later emperor Nguyễn Huệ.