Percy Benjamin Allen (1913–1992) was a New Zealand politician of the National Party.
He represented the Bay of Plenty electorate in Parliament from 1957, when he won the 1957 by-election after the resignation of William Sullivan, until 1975, when he retired.
He was a Cabinet minister from 1963 to 1972 in the Second National Government.
He was awarded the QSO in 1976.