Lưu or Luu is a Vietnamese surname. It is also the Vietnamese transliteration of the Chinese surname Liu (劉). during the Ancient, The Yao people use surname Liu (劉), H'mong-Mien Lìu, they emigrate from Guangdong, Guangxi, to Vietnam. during the Yuan dynasty, the Mongols used the surname Liu in Vietnam.
In according to folk-story "Hùng Vương Ngọc Phả" (Family tree of Hung King) one of 50 son of Kinh Dương Vương there was Lưu Lang, who joined with Mother Âu Cơ and settled to northern mountain area of Van Lang. Luu Lang is considered as Ancestor of all Vietnamese/Kinh people possessed surname Luu. And other folktale: "Sự tích trầu cau" - Legend of areca nuts and betel leaves, its mentioned about a Landlord with surname Luu. The offering of areca nuts and betel leaves to the ancestors is a Vietnamese wedding ritual. It's also ancient legendary story only.
Luu may refer to:
5430 Luu (1988 JA1) is a main-belt asteroid discovered on May 12, 1988 by C. S. Shoemaker at Palomar. The asteroid 5430 Luu is named in honor of Vietnamese American astronomer Jane Luu for her research and discovering the first and subsequent members of the Kuiper Belt.
Photometric observations of this asteroid collected during 2006 show a rotation period of 13:33 ± 00:01.2 hours with a brightness variation of 0.06 ± 0.02 magnitude.