Yunxiao Niangniang (Chinese: 雲宵娘娘; lit. 'Lady of the Cloud Firmament'), also known as Zhao Yunxiao, is a Chinese goddess of childbirth. She is the oldest of the Sanxiao Shengmu (Holy mothers of three skies, 三霄聖母) or Sanxiao Niangniang (Ladies of three stars, 三霄娘娘). Sanxiao Niangniang is also worshipped as the household deity or toilet god. It is said "the kitchen god was in the kitchen and Sanxiao was in the cottage".
According to the Investiture of the Gods, Zhao Yunxiao is a female celestial aiding Grand Old Master Wen Zhong. She is one of the three younger sisters of the God of wealth Zhao Gongming. The three sisters were killed when fighting Jiang Ziya. Later, they were appointed as deities. They are worshipped as deities controlling smallpox and children's diseases.
- Chen, Fan-Pen Li (2007). Chinese Shadow Theatre: History, Popular Religion, and Women Warriors. McGill-Queen's Press - MQUP. ISBN 978-0-7735-3197-0.
- Overmyer, Daniel (30 September 2009). Local Religion in North China in the Twentieth Century: The Structure and Organization of Community Rituals and Beliefs. BRILL. ISBN 978-90-474-2936-4.
- "The Dark History of Conferred Gods: Yunxiao was killed innocently by unspoken rules Jiang Taigong leaked the Yellow River and changed Shanxi folklore". INF News. 18 March 2021.
- Stuart, Kevin; Li, Xuewei (1994). China's Dagur Minority: Society, Shamanism, & Folklore. University of Pennsylvania, Department of Asian and Middle Eastern Studies.