Kawahara Keiga (Japanese: 川原慶賀, also known as Taguchi Takumi or Toyosuke, Nagasaki, 1786–1860?) was a late Edo period Japanese painter of plants, fishes, birds, reptiles, crustaceans, social scenes, landscapes and portraits at the Dutch Factory of Dejima, and at Edo, Kyoto and Nagasaki. His works can be found in museums in Japan (about a hundred works) and in the Netherlands (about a thousand), among others.