Paccaya (a Pali term meaning "condition", "support", "requisite", or "suffix") may refer to:
Idappaccayatā, the general principle of conditionality or causality in Buddhism Pratītyasamutpāda (dependent origination), the process of conditional origination through the 12 links (nidānas) The 24 conditional relations (paccayas) in the Paṭṭhāna, a text of the Pali Abhidhamma Catupaccaya (four requisites), the four necessities of life for members of the Sangha (food, robes, shelter, and medicine) Suffix or affix (paccaya) in Pali grammar byākaraṇa, added to a root (dhātu)