Karni Mata (Hindi: करणी माता) (2 October 1387 – 23 March 1538), or Karniji, was 
a female Hindu sage born in the Charan caste. She is worshiped as the incarnation of the goddess Durga by her followers. She is an official deity of the royal family of Jodhpur and Bikaner. She lived an ascetic life and was widely revered during her own lifetime. At the request of the Maharaja of Bikaner, she laid the foundation stones for two important forts in the region. 


The most famous of her temples is the temple in the small town of Deshnoke, near Bikaner, which was created following her mysterious disappearance from her home. The temple is famous for its black rats, which are treated as sacred and given protection in the temple. Contrary to some reports, the temple is not affiliated with Jainism. Another temple dedicated to her during her lifetime differs from others in that it does not contain an image or idol of her, but rather contains a foot-print to symbolize her visit to that place. Karni mata is also referred to as Nari Bai.