See Shiksha (NGO) for the Indian NGO.

Shiksha (IAST śikṣā) is one of the six Vedangas, treating the traditional Hindu science of phonetics and phonology of Sanskrit.

Its aim is the teaching of the correct pronunciation of the Vedic hymns and mantras. The oldest phonetics textbooks are the Pratishakyas, describing pronunciation, intonation of Sanskrit, as well as the Sanskrit rules of sandhi. All Samhitas have their associated Pratishakyas, the oldest being the Rigveda-Pratishakya attributed to Shaunaka.