VAC or Vac may refer to:
Vāk or Vāc (Sanskrit: वाक्, stem vāc-, nominative vāk) is the Sanskrit word for "speech", from a verbal root vac- "speak, tell, utter".
Personified, Vāk is a goddess; in the Veda she is also represented as created by Prajapati and married to him; in other places she is called the "mother of the Vedas" and associate of Indra. In Hinduism, she is identified with Sarasvati.
In the early Rigveda (books 2 to 7), vāc- refers to the voice, in particularly the voice of the priest raised in sacrifice. She is personified only RV 8 and RV 10, in RV 10.125.5 speaking in the first person (trans. Griffith),
The intimate connection of speech, sacrifice and creation in (late) Rigvedic thought is expressed in RV 10.71.1-4:
Vak also speaks, and is described as a goddess, in RV 8.100:
RV 1.164.45 has: