What does Om mean?

Om is the most sacred syllable in Hindu practice. It is said before prayers, at the beginning and end of a Veda lesson, and at the head of many mantras, such as Om Namah Shivaya, and of the aarti Om Jai Jagdish Hare. The Upanishads call it the word that all the Vedas record and a name of Brahman. In the Gita, Krishna says he is the syllable Om in all the Vedas (7.8). Patanjali's Yoga Sutras call it the name of the Lord. The texts agree that Om names the highest. Readers differ on what the highest is: the formless Brahman, the Lord (Ishvara) of Patanjali's Yoga, or, for Vaishnavas, the personal Lord, Vishnu or Krishna.

Written for Pujadeep and checked against the sources listed.

What the schools say

Upanishads

In the Katha Upanishad, Yama tells Nachiketas that the word “which all the Vedas record, which all penances proclaim” is Om, and that this syllable means Brahman, the highest. The Shvetashvatara Upanishad uses an image from fire-making: with the body as the lower firewood and Om as the upper, a person who keeps up the drill of meditation will see the bright god, like the spark hidden in the wood.

Sources for this reading

  • The Upanishads, Part II, translated by F. Max Müller (The Sacred Books of the East, vol. XV; Oxford: Clarendon Press, 1884) (Katha Upanishad 1.2.15–16 (first Adhyaya, second Valli), p. 10 (leaf n67), quoted verbatim; Shvetashvatara Upanishad 1.13–14, pp. 236–237 (leaves n293–n294); checked on the page images)

Dharmashastra (Manu)

The law books treat Om as the gateway of the Veda. Manu says that Om is said at the beginning and at the end of a lesson in the Veda (2.74); that the three great words, “preceded by the syllable Om”, and the Savitri verse are “the portal of the Veda” (2.81); that “The monosyllable (Om) is the highest Brahman” (2.83); and that while rites pass away, the syllable Om is imperishable (2.84).

Sources for this reading

Bhagavad Gita and Vaishnava readers (Ramanuja)

In the Gita, Krishna lists what he is within the world: “I am the taste in water … I am ‘Om’ in all the Vedas, sound in space, and manliness in human beings” (7.8, Telang). Ramanuja reads verses 8 to 11 together: the taste of water, the light of sun and moon, the Om of the Vedas and the rest all spring from the Lord alone; they belong to him and are his body, and he is their Self.

Sources for this reading

  • Bhagavad Gita, 7.8
  • Sri Bhagavad-Gita with Sri Ramanujacharya's Visishtadvaita commentary, translated by A. Govindacharya (Madras, 1898) (commentary on 7.8–11, pp. 237–238 (leaves n242–n243); checked on the page images)

Yoga (Patanjali)

Patanjali's Yoga Sutras speak of the Lord (Ishvara) as the teacher even of the ancients, and then say, in Max Müller's translation, “His name is Pranava”, that is, Om (1.27). Müller explains that for Patanjali this Lord is the highest of the selves (purushas), yet one among them; a later commentator, Vijnana-Bhikshu, says that devotion to him consists in contemplation. Here Om names that Lord.

Sources for this reading

Sources

More questions

Source and licence

Our explanation
Written for this site from the sources listed here, and checked against them. Free to quote with credit.
Checked
Checked against the sources listed, October 13, 2026.
Updated
October 15, 2026

Sources and licences

Report a problem with this page · or email us · Corrections