Saburobe Nakai III (中井 三郎兵衛 (3代), Nakai Saburobe (san-dai), 1821 - 1899) was a Japanese businessperson who was deeply involved in founding Mitsui Bank and Mitsui & Co., the head of branch family of Mitsui family and the founder of specialist trading company dealing in paper ranked first in Japan and third in the world, namely Japan Pulp and Paper Company.
[3] In 1845 when he was serving Mitsui family as manager (bantō) at Mitsui Echigoya kimono fabric store, he succeeded the name of "Saburobe" and started Japanese traditional paper 'washi' dealer "Echisan Shoten" (now, Japan Pulp and Paper Company).
"Echisan Shoten", wholesale washi dealer, was started by Saburobe Nakai III with the permission of use of goodwill of Mitsui family due to the recognition for long-term achievements from the generation of Saburobe Nakai I.
[4] Then he was exceptionally allowed to use Maru-ni-koshi (丸に越), goodwill of Mitsui family (now, Logo of Mitsukoshi).
[5] Saburobe also exerted himself for establishing Yokkaichi City Papers by financing together with the president of the Daiichi Bank, Shibusawa Eiichi.