Ganku 岸駒, or more formally Kishi Ku, was a leading Japanese painter of Kyoto and founder of the Kishi school of painting. He is famous for his paintings of tigers.
Ganku was born in Kanazawa as Kishi Saeki, studied painting styles including those of Chinese painter Shen Nanpin and the Maruyama-Shijō school, and arrived in Kyoto around 1780.
By the late 18th century, Ganku's paintings were appreciated by patrons that included the imperial family, leading to a position under Prince Arisugawa. His students included his son, Gantai 岸岱, son-in-law Ganryou 岸良, adopted son Renzan 連山, Yokoyama Kazan 横山華山, Shirai Kayou 白井華陽, and Kawamura Bumpou 河村文鳳. He was made honorary governor of Echizen toward the end of his life.
Ganku died on January 19, 1839, in Kyoto.