Varahi (Sanskrit: वाराही, IAST:Vārāhī) is one of the Matrikas, a group of seven mother goddesses in the Hindu religion who bears the head of a sow. In Nepal, she is called Barahi. In Rajasthan and Gujarat, she is venerated as Dandini.

Varahi is more commonly venerated in the sect of the Goddess-oriented Shaktism, but also in Shaivism (devotees of Shiva) and Vaishnavism (devotees of Vishnu). She is usually worshipped at night, using secretive Vamamarga Tantric practices. Her forms can be seen in Buddhism as well, like the Buddhist goddesses Vajravārāhī and Marichi.

According to the Shumbha-Nishumbha story of the Devi Mahatmya from the Markandeya Purana, the Matrikas appear as shaktis (feminine powers) from the bodies of the gods. The scriptures say Varahi was created from Varaha. She has a boar form, wields a chakra (discus) and fights with a sword. After the battle described in the scripture, the Matrikas dance – drunk on the demons' blood.

According to a later episode of the Devi Mahatmya that deals with the killing of the demon Raktabija, the warrior-goddess Durga creates the Matrikas from herself and with their help slaughters the demon army. When the demon Shumbha challenges Durga to a duel, she absorbs the Matrikas into herself. In the Vamana Purana, the Matrikas arise from different parts of the Divine Mother Chandika; Varahi arises from Chandika's back.

The Markendeya Purana praises Varahi as a granter of boons and the regent of the Northern direction, in a hymn where the Matrikas are declared as the protectors of the directions. In another instance in the same Purana, she is described as riding a buffalo. The Devi Bhagavata Purana says Varahi, with the other Matrikas, is created by the Supreme Mother. The Mother promises the gods that the Matrikas will fight demons when needed. In the Raktabija episode, Varahi is described as having a boar form, fighting demons with her tusks while seated on a preta (corpse).

In the Varaha Purana, the story of Raktabija is retold, but here each of the Matrikas appears from the body of another Matrika. Varahi appears seated on Shesha-nāga (the serpent on which the god Vishnu sleeps) from the posterior of Vaishnavi, the Shakti of Vishnu. Varahi is said to represent the vice of envy (asuya) in the same Purana.

The Matsya Purana tells a different story of the origin of Varahi. Varahi, with other Matrikas, is created by Shiva to help him kill the demon Andhakasura, who has the ability – like Raktabija – to regenerate from his dripping blood.

The Devi Purana paradoxically calls Varahi the mother of Varaha (Varahajanani) as well as Kritantatanusambhava, who emerges from Kritantatanu. Kritantatanu means "death personified" and could be an attribute of Varaha or a direct reference to Yama, the god of death. Elsewhere in the scripture, she is called Vaivasvati and described as engrossed in drinking from a skull-cup. Pal theorizes that the name "Vaivasvati" means that Varahi is clearly identified with Yami, the shakti of Yama, who is also known as Vivasvan. Moreover, Varahi holds a staff and rides a buffalo, both of which are attributes of Yama; all Matrikas are described as having the form of the gods, they are shaktis of.