Fujii Saneteru was a Japanese high-goshi samurai who served the Tosa Domain during the Bakumatsu period. In 1862, he imprisoned the goshi Sakamoto Ryoma after he got into a public fight with two joshi and ridiculed Sakamoto for brazenly violating Tosa's caste system, but Sakamoto criticized Fujii's hypocrisy as a goshi defending the interests of the condescending joshi. While Fujii intended to execute Sakamoto for insulting him, Yoshida Toyo arrived just in time to cancel Sakamoto's execution and release him.