Lê Quý Đôn (chữ Hán: (黎貴惇; 2 August 1726 – 11 June 1784), né Lê Danh Phương,[1][2] on his pen name is Doãn Hậu 允厚, and Quế Đường 桂堂 was an 18th-century Vietnamese poet, encyclopedist, and government official.

The period of his life was marked by a split between the Trịnh lords of the north and the Nguyễn lords, in the aftermath of an examination system scandal involving his son Lê Quý Kiêt (who was sent to prison for changing examination books), had been ordered south of the Linh Giang River to serve as an official ...As a member of the Trịnh lords' bureaucracy, Lê Quý Đôn was supposed to help restore civil government in a region of Viet Nam that had been separate from the Trịnh lords' control for over two centuries, and facilitate the reincorporation of" In 1760, Lê Quý Đôn went to China as an ambassador.

He also served as the rector of the National University situated in the Văn Miếu in Hanoi and as Director of the Bureau of Annals.

Lê Quý Đôn was responsible for a large number of encyclopedic, historical, bibliographical, and philosophical works.

Some of its data: overall length: 65.0 m, breadth: 10.0 m, air draft: 42.0 m, sails area: 1395 m2, propulsion: 880 kW, crew and cadets: 30 + 80 persons.