Fujiwara no Teishi
| Fujiwara no Teishi 藤原定子 | |
|---|---|
| Empress consort of Japan | |
| Tenure | October 26, 990 – January 13, 1001 |
| Born | 977 |
| Died | January 13, 1001 (aged 23–24) |
| Spouse | |
| Issue |
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| House | Fujiwara clan (by birth) Imperial House of Japan (by marriage) |
| Father | Fujiwara no Michitaka |
| Mother | Takashina no Kishi |
Fujiwara no Teishi (藤原 定子, 977 – January 13, 1001), also known as Sadako, was an empress consort of the Japanese Emperor Ichijō. She appears in the literary classic The Pillow Book written by her court lady Sei Shōnagon.