Cao Huan
Empress Bian, personal name unknown, was an empress of Cao Wei during the Three Kingdoms period of China. She was married to Cao Huan (Emperor Yuan), the fifth and last emperor of Cao Wei. She was a daughter of Bian Lin (卞霖) and a granddaughter of Bian Bing (卞秉), a brother of Lady Bian (the mother of Cao Pi, the first Wei emperor).