Matthew Prior (1664-1721), an English poet of the mid-17th century.

Prior (Stargate), a fictional race in the television series Stargate

Mark Prior (b. 1980), baseball pitcher for the Chicago Cubs

Arthur Prior (1914-1969), philosopher and logician of the early 20th century

Matthew Prior (cricketer) (b. 1982), played for England 2004–

Prior, the head of a priory

James Prior, Baron Prior (b. 1927), British politician

Alex Prior (b. 1992), Russian child prodigy composer

Prior Norge, a defunct Norwegian egg and white meat processing cooperative.

Prior (brand), a Norwegian brand of eggs and white meat.

David Prior, various

Prior probability in Bayesian statistics