Momosuke Fukuzawa (福澤 桃介 Fukuzawa Momosuke, June 25, 1868 – February 2, 1938) was a Japanese businessman nicknamed "The Wizard of the Money Markets" for his financial success and "The King of Electrical Power" for being the first Japanese to introduce hydroelectric power to the country.

“Kiichi was a rather impractical, scholarly type, who much preferred sitting at home with his brush, perfecting his calligraphy, to breaking his back in the fields.”[3] To support the family his mother Sada opened a shop but they “were frequently on the verge of bankruptcy.”[4] As Momosuke was finishing school, a neighbor, “a lower-ranking keeper of the town office,” noticed his academic abilities and told Kiichi to have Momosuke apply to Keio University, only recently founded.

With the financial support of his father's elder brother[7] Momosuke began his studies there.

While at Keio he became known as “the pretty boy from Kawagoe who is tougher than he looks,”[8] for being able to fend off his samurai-born classmates despite his delicate features.

While at Keio he formed relationships with Sadayakko, the most famous geisha in the city, and with the university's founder Yukichi Fukuzawa.