Genki (Japanese 源琦, call name Yukinosuke (幸之助); born 12 June 1747; died 8 August 1797) was a Japanese painter of the Maruyama Shijō school of the middle Edo period.
Genkis was actually called Komai Ki (駒井 琦). But because he traced his name back to the Minamoto (Sino-Japanese Gen), this surname is often written together with the suffix Ki, resulting in Genki. He studied painting under Maruyama Ōkyo, whose style he mastered brilliantly. He was good at multi-coloured painting, depicting Chinese beauties as so-called court lady paintings, as well as flower and bird themes. Together with Nagasawa Rosetsu, he was one of Ōkyo’s best pupils, with Rosetsu showing more expressiveness and Genki a more calm style of painting.
After Ōkyo’s death in 1795, he supported his son and successor Ōzui in continuing the Maruyama line. However, he died at the age of 50 and was buried in Myōsen-ji in Kyōto. – His most famous works are murals (障壁画, Shōheki-ga) in Daijō-ji (大乗寺) in the village of Kami (香美町) on the Sea of Japan in Kyōto Prefecture.