Fujiwara no Hidesato was a Japanese aristocrat, courtier and samurai lord of the tenth century in the Heian period. He is famous for his military exploits and courage, and is regarded as the common ancestor of numerous clans, including the Ōshū branch of the Fujiwara clan.

The Northern Fujiwara were a Japanese noble family that ruled the Tōhoku region of Japan during the 12th century as their own realm.