The Rigveda (Sanskrit: ऋग्वेद ṛgveda, a compound of ṛc "praise, verse" and veda "knowledge") is an ancient Indian sacred collection of Vedic Sanskrit hymns. It is counted among the four canonical sacred texts (śruti) of Hinduism known as the Vedas. Some of its verses are still recited as Hindu prayers, at religious functions and other occasions, putting these among the world's oldest religious texts in continued use. The Rigveda contains several mythological and poetical accounts of the origin of the world, hymns praising the gods, and ancient prayers for life, prosperity, etc.

It is one of the oldest extant texts in any Indo-European language. Philological and linguistic evidence indicate that the Rigveda was composed in the north-western region of the Indian subcontinent, roughly between 1700–1100 BC (the early Vedic period).

The surviving form of the Rigveda is based on an early Iron Age (c. 10th c. BC) collection that established the core 'family books' (mandalas 2–7, ordered by author, deity and meter ) and a later redaction, co-eval with the redaction of the other Vedas, dating several centuries after the hymns were composed. This redaction also included some additions (contradicting the strict ordering scheme) and orthoepic changes to the Vedic Sanskrit such as the regularization of sandhi (termed orthoepische Diaskeuase by Oldenberg, 1888).