六派哲学（şaddarśana），亦作正统派(Astika)，是印度哲学的六个主要派别，兴起与笈多王朝时期。共同尊奉《吠陀经》，这六派分别为：

六大派别有各自的经典，分别如下：

而历史上及概念上，这六大派普遍会分为以下三类：

Āstika ("there is, there exists") and nāstika ("not āstika") are concepts used by the Brahmanical tradition, and modern scholars to classify and contrast Indian philosophies. Āstika has been defined in one of three ways; as those who accept the epistemic authority of the Vedas, as those who accept the existence of ātman, or as those who accept the existence of Ishvara. In contrast, nāstika are those who deny the respective foundational definitions of āstika.