Arinobu Fukuhara (福原 有信 Fukuhara Arinobu, May 10, 1848 – March 30, 1924) was a Japanese businessman and pharmacist, who was the head of Apothecary Shiseidō (which in 1927 would be incorporated as Shiseidō) and Toku Fukuhara (福原 とく Fukuhara Toku). In addition, this businessman's name is known internationally because of the Arinobu Fukuhara House at Hakone, which Frank Lloyd Wright designed in 1918 as a Prairie-style vacation villa for the extended Fukuhara family.
Born in Awa, Chiba-ken, he rose in due course to become Chief Pharmacist of the Japanese Imperial Navy. In retirement, he embarked on a second career which would bring fame and fortune. He was also president of the Aikoko Insurance Company.
Arinobu was the father of photographers Rosō Fukuhara (福原 路草 Fukuhara Rosō, 1892–1946), Shinzō Fukuhara (福原 信三 Fukuhara Shinzō, 1883–1948) and Nobuyushi Fukuhara (福原 信義 Fukuhara Nobuyushi, 1897–1958), who would gain fame as Tōru Namiki (並木 透 Namiki Tōru). His sons became quintessential mobo, or "modern boys"—the sobriquet coined to describe the young, sophisticated, up-to-date young men who frequented the fashionable Ginza district in the late 1920s—and they shared a fascination and persistent attraction to photography as an art form. The Fukuharas helped to bring photography into the mainstream of Japanese modernism. The two brothers were founding organizers of the Japan Photographic Society (日本写真会 Nihon Shashinkai) in 1924; and Shinzō was its first president. The organization was a major pre-war influence on Japanese photography and still exists today despite a temporary dissolution during the years of the Pacific War.