This article is about the religious poem. For the record label, see Mantra Records. For the piece by Karlheinz Stockhausen, see Mantra (Stockhausen). For the Malibu comic, see Mantra (comic).

A mantra is a religious syllable or poem, typically from the Sanskrit language. Their use varies according to the school and philosophy associated with the mantra. They are primarily used as spiritual conduits, words or vibrations that instill one-pointed concentration in the devotee. Other purposes have included religious ceremonies to accumulate wealth, avoid danger, or eliminate enemies. Mantras originated in India with Vedic Hinduism and were later adopted by Buddhists, Sikhs and Jains, now popular in various modern forms of spiritual practice which are loosely based on practices of these Eastern religions.

The Sanskrit word (m. मन्त्रः, also n. मन्त्रं) consists of the root man- "to think" (also in manas "mind") and the suffix -tra meaning, tool, hence a literal translation would be "instrument of thought". Mantras are interpreted to be effective as sound (vibration), to the effect that great emphasis is put on correct pronunciation (resulting in an early development of a science of phonetics in India). They are intended to deliver the mind from illusion and material inclinations. Chanting is the process of repeating a mantra.