Keibun Ota (?????, Ota Keibun), real name Yoshifumi Ota (????, Ota Yoshifumi), is a painter and illustrator born on November 10, 1951, in Haboro, Hokkaido Prefecture, Japan.
He is best known for his watercolor paintings of young girls and children.
Ota has multiple books in print which collect his works, and he has created illustrations for magazines, books, calendars, and posters, and has had multiple one-man exhibitions.
He currently lives in Izu, Shizuoka Prefecture.