| Tsuchiya Kōitsu | |
| Birth Name: | Tsuchiya Koichi |
| Native Name Lang: | ja |
| Birth Date: | September 23, 1870 |
| Birth Place: | Hamamatsu, Shizuoka, Japan |
| Death Date: | [1] |
| Death Place: | Chigasaki, Kanagawa, Japan |
| Occupation: | Woodblock printing artist |
| Movement: | Ukiyo-e |
Tsuchiya Kōitsu (Japanese: 土屋光逸) was a Japanese artist in the Shin-hanga movement. He trained under the ukiyo-e master Kobayashi Kiyochika for 19 years, and initially focused on works depicting scenes from the First Sino-Japanese War. In 1931, at the age of 60, he began work for Shōzaburō Watanabe and his art publishing establishment which also published the work of artists like Kawase Hasui and Yoshida Hiroshi. His later work incorporated light effects to increase the emotional impact of his art.
Tsuchiya Koitsu was born on September 23, 1870, in Hamamatsu, Shizuoka, Japan. His birth name was either Koichi or Sahei. He moved to Tokyo at age 15. He first had an apprenticeship for the woodblock carver Matsuzaki, but soon became a student of ukiyo-e master Kiyochika Kobayashi. He worked for Kiyochika for 19 years and lived in his house.
He initially published prints made during the First Sino-Japanese War, before developing his skill with dramatic light effects, learned from Kiyochika. Koitsu published through the Watanabe publishing house after Watanabe and Koitsu met at an exhibition commemorating the 17th anniversary of Kiyochika's death. He also produced prints for publishers Doi Sadaichi, Kawaguchi, Baba Nobuhiko, Tanaka Shobido, and Takemura.