Nyaya is one of the six orthodox schools of Indian philosophy (Skt. न्याय), focusing on logic and epistemology.

Nyaya is significant on the path of knowledge because:

• It provides a rigorous system of logic

• It defines valid means of knowledge (pramana): direct experience (pratyaksha), inference (anumana), comparison (upamana), and testimony (shabda)

• It develops a sophisticated theory of evidence

• It analyzes logical fallacies and invalid reasoning

The path of knowledge draws from Nyaya's logical framework but accepts only direct experience and logic as valid means, rejecting the others upon refutation of evidence.

See also eastern philosophy and vaisheshika.