In this Japanese name, the family name is Fujita.
Fujita Seiko (?? ??, February 10, 1898 – January 4, 1966), born Fujita Isamu, was a prominent Japanese martial artist, researcher and author.
Regarded as the 14th and final heir to the Koga-ryu Wada-ha Ninjutsu tradition, he was highly respected by his peers and a core member of Japan's classical martial arts community.