Qi is the romanization of several Chinese family names, including 祁 (Qí), 齊/齐 (Qí), 戚 (Qī), 乞 (Qí), 奇 (Qí) and 亓 (Qí).
Qi (祁, also commonly written as Chi, and Kei in Cantonese) is a Chinese surname. It originated from the descendants of Shaohao, descendant of Yao (ruler), Ji (姬) family of Jin (Chinese state), Khitan people of Liao Dynasty, Hui people of during the Han Dynasty, Dongxiang people.
Qi (齊/齐, also commonly written as Chi, and Chai in Cantonese) is Chinese surname originated from the Qi (state) (齊/齐).
Qi (戚, also written as Chik in Cantonese) is Chinese surname of Wei (state) (魏).
Qi (乞, also commonly written as Chi, or Hat or Gat in Cantonese) is Chinese surname, originated from Jiang (surname) (姜) of Qi (state) (齐), and Xianbei of Northern Wei, Mongolian of Yuan Dynasty, Jurchens people of Qing Dynasty.
Qi (奇, also commonly written as Ji or Ci in mandarin, Kei in Cantonese) is Chinese surname. during the Qing Dynasty, Khitan people Cideri (奇德哩), Cidumu (奇杜穆), Cileng (奇楞), Cimosi (奇墨斯), Citela (奇塔喇), Cilei (奇壘) reduce surname Qi (奇). during the Qing Dynasty, Jurchen the Du (surname) (杜) family Chenge surname to Qi (奇).