was a Japanese waka poet of the early eleventh century. One of her poems was included in the Ogura Hyakunin Isshu.
She was the daughter of Izumi Shikibu and , the governor of Mutsu.
Starting around 1009, she joined her mother in serving Empress Shà Âshi.
A target of many suitors, she eventually married . They had a child, but she died thereafter, still in her late twenties.
Four of her poems were included in imperial anthologies such as the Goshà «i Wakashà « and the Kin'yà  Wakashà «.
The following poem by her was included as No. 60 in Fujiwara no Teika's Ogura Hyakunin Isshu:
Numerous anecdotes about her were incorporated into later and setsuwa collections.
An otogizà Âshi, Koshikibu, was also written.