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A priori (Latin, 'from the earlier') is a term used in philosophy and epistemology.

A priori or apriori may also refer to:

• A priori language, a type of constructed language
• A priori estimate, in the theory of partial differential equations
• A priori probability, a probability derived by deductive reasoning
• Apriori algorithm, an algorithm used with databases
• aPriori Capital Partners, a private equity investment firm

See also

• All pages with titles containing apriori
• All pages with titles containing a priori
• A posteriori (disambiguation)
• Priory, a monastery headed by a prior or prioress
• Ex-ante , a Latin phrase meaning 'before the event'

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