Empress Dowager Xiao (Chinese: 蕭太后; personal name unknown) (died 7 October 951?[1][2]), formally Empress Rouzhen (柔貞皇后), was an empress dowager of the Khitan-led Chinese Liao dynasty. She was a concubine of Yelü Bei (posthumously honored Emperor Yizong) and the mother of Emperor Shizong (Yelü Ruan).