Ogasawara Nagakiyo (小笠原 長清, March 5, 1162 – July 15, 1242) was a Japanese samurai warlord of the late Heian and early Kamakura period.

[3] Nagakiyo was born on March 5, 1162, in Ogasawara, Koma, Kai Province (within present-day Hokuto, Yamanashi Prefecture) at the mansion of Ogasawa Manor as the second son of Kagami Tōmitsu.

[1] Nagakiyo became the dai-shogun (great general) of Tōsandō during the Jōkyū War in 1221, and fought against the kugyō (court nobles), who were against the shogunate.

[1] Nagakiyo's sixth generation descendant, Ogasawara Sadamune, founded the way of mounted archery, which became the family art.

[citation needed] Nagakiyo was called the "Four Heavenly Kings of Archers and Horses" along with Takeda Nobumitsu, Yukiuji Unno, and Shigetaka Mochizuki, and tried to collect and systematize their skills and knowledge.