Oobuchi Zenkichi (大淵善吉; fl. c. 1912 - 1942) was a prolific writer, editor, publisher, bookseller, and cartographer based in Osaka. He was a descendent of Oobuchi Wataru (大淵渉; 1855 ‐ 1907), who founded the Shinshindō (駸々堂) bookstore and publishing house, and particularly focused on tourist maps for various cities and sites throughout Japan.
