Peter Bradford Benchley (May 8, 1940 – February 12, 2006) was an American author, best known for his novel Jaws and its subsequent film adaptation, the latter co-written by Benchley (with Carl Gottlieb) and directed by Steven Spielberg. Two more of his works, The Deep and The Island, were also adapted for cinema.

He was the son of author Nathaniel Benchley and grandson of Algonquin Round Table founder Robert Benchley. His younger brother, Nat Benchley, is a writer and actor. Peter Benchley was an alumnus of Phillips Exeter Academy and Harvard University.

After graduating from college, he worked for The Washington Post, then as an editor at Newsweek and a speechwriter in the White House for President Lyndon Johnson. He developed the idea of a man-eating shark terrorising a community after reading of a fisherman catching a 4,550 pound great white shark off the coast of Long Island in 1964. He also drew some material from the tragic Jersey Shore shark attacks of 1916.