Chamunda (Sanskrit: चामुण्डा, IAST: Cāmuṇḍā), also known as Chamundeshwari, Chamundi or Charchika, is a fearsome form of Chandi, the Hindu mother goddess, Mahadevi and is one of the seven Matrikas.

She is also one of the chief Yoginis, a group of sixty-four or eighty-one Tantric goddesses, who are attendants of the warrior goddess Parvati. The name is a combination of Chanda and Munda, two demons whom Chamunda killed. She is closely associated with Mahakali or Durga.

The goddess is often portrayed as residing in cremation grounds or near holy fig trees. The goddess is worshipped by ritual animal sacrifices along with offerings of wine. The practice of animal sacrifices has become less common with Vaishnavite influences.

Ramakrishna Gopal Bhandarkar claims that Chamunda was originally a tribal goddess, worshipped by the tribals of the Vindhya mountains range in central India. These tribes were known to offer goddesses animal as well as human sacrifices along with liquor. These methods of worship were retained in Tantric worship of Chamunda, after its assimilation into mainstream Hinduism. He proposes the fierce nature of this goddess is due to her association with Rudra (Shiva), identified with the fire god Agni at times. Wangu also backs the theory of the tribal origins of the goddess.

The black- or red-coloured Chamunda is described as wearing a garland of severed heads or skulls (Mundamala). She is described as having four, eight, ten or twelve arms, holding a Damaru (drum), trishula (trident), sword, snake, skull-mace (khatvanga), thunderbolt, a severed head and panapatra (drinking vessel) or skull-cup (kapala), filled with blood. She stands or sits upon the corpse of a man (shava or preta), a defeated demon or corpse. She is adorned with bones, skulls, and serpents. She also wears a Yajnopavita (sacred thread) of skulls. She wears a jata mukuta, that is, a headdress formed of piled, matted hair tied together with snakes or skull ornaments. Sometimes, a crescent moon is seen on her head. Her eye sockets are described as burning the world with flames. She is accompanied by spirits. She is also shown to be surrounded by skeletons, ghosts and beasts like jackals, who are shown eating the flesh of the corpse the goddess sits or stands on. The jackals and her fearsome companions are sometimes depicted as drinking blood from her skull cup or the severed head she is holding, implying that Chamunda drinks the blood of the defeated enemies. This quality of drinking blood is a characteristic of all Matrikas, and Chamunda in particular. At times, she is depicted seated on an owl, her vahana (mount or vehicle), or a buffalo or Dhole. Her banner figures an eagle.

These characteristics, a contrast to the typical depictions of Hindu goddesses with beautiful faces, symbolise the inevitability of old age, death, decay and destruction. Chamunda is often seen as a form of Kali. She appears as a frightening old woman, projecting fear and horror.

In Hindu scripture Devi Mahatmya, Chamunda emerged as Chandika Jayasundara from an eyebrow of goddess Kaushiki, a goddess created from the "sheath" of Durga and was assigned the task of eliminating the demons Chanda and Munda, generals of demon kings Shumbha-Nishumbha. She fought a fierce battle with the demons, ultimately killing them.

According to a later episode of the Devi Mahatmya, Durga created Matrikas from herself and with their help slaughtered the demon army of Shumbha-Nishumbha. In this version, Kali is described as a Matrika who sucked all the blood of the demon Raktabīja, from whose blood drop rose another demon. Kali is given the epithet Chamunda in the text. Thus, the Devi Mahatmya identifies Chamunda with Kali.