Asukai Masatsune (飛鳥井雅経, 1170–1221) was a Japanese waka poet of the early Kamakura period. ^{[1] [2]} He was also an accomplished kemari player. ^{[1] [2] [3]} and one of his poems was included in the Ogura Hyakunin Isshu. ^{[3] [4]}

He was a son of Nanba Yoritsune (難波頼経, Japanese Wikipedia), ^[1] and the ancestor of the Asukai family, who were known for their skill at both poetic composition and kemari. ^{[1] [4]} Being of Fujiwara stock, ^[1] he was also known as Fujiwara no Masatsune (藤原雅経). ^{[2] [3] [4]} Among his grandchildren was the poet Masaari. ^{[5] [6]} He made a private collection, the Asukai-shū, which was posthumously edited by his grandson in 1292. Twenty-two of his poems were included in the Shin Kokin Wakashū, and a total of 134 in the imperial anthologies.

Masatsune served three emperors, Go-Toba, Tsuchimikado and Juntoku, in addition to working under the Kamakura shogunate. ^[1]

Masatsune studied waka under Fujiwara no Shunzei and from 1201 ^[3] served in the Poetry Bureau (和歌所, Waka-dokoro). ^[1] He served as one of the compilers of the Shin Kokin Wakashū, along with Shunzei's son Teika. ^{[1] [2]} Some twenty-two of his own poems were included in the imperial collection. ^[1] A total of 134 of his poems were included in it and later imperial collections. ^[3] He also compiled a private waka collection, the Asukai-shū (明日香井集, also called Asukai Wakashū, 明日香井和歌集 ^[2]), which was edited by his grandson Masaari in 1292. ^[1]

The following poem by him was included as No. 94 in Teika's famous Ogura Hyakunin Isshu:

• McMillan, Peter. 2010 (1st ed. 2008). One Hundred Poets, One Poem Each. New York: Columbia University Press.
• Suzuki Hideo, Yamaguchi Shin'ichi, Yoda Yasushi. 2009 (1st ed. 1997). Genshoku: Ogura Hyakunin Isshu. Tokyo: Bun'eidō.