Okamoto Ippei (岡本一平) (June 11, 1886 – October 11, 1948) was a Japanese illustrator, cartoonist, and writer.
He studied Western-style painting at Tokyo School of the Arts under the instruction of Japanese painter Fujishima Takeji.
[2] Okamoto traveled to Europe and the United States and brought to Japan several comics.
He opened a school called Ippei Juku, where he was teacher of cartoonists Hidezo Kondo and Yukio Matsuura.
[3] Manga artist Osamu Tezuka mentioned Okamoto as one of his main influences.