Roland Henry Chaplin,, known as Roy Chaplin, was an aeronautical engineer who worked with Sydney Camm at Hawker Aircraft Limited from 1927 to 1962. He helped design the Hawker Fury biplane, the Hurricane monoplane, and the Harrier jump jet. He graduated with a degree in engineering from London University and retired in the 1960s.

Sir Sydney Camm, CBE, FRAeS was an English aeronautical engineer who contributed to many Hawker aircraft designs, from the biplanes of the 1920s to jet fighters. One particularly notable aircraft he designed was the Hawker Hurricane fighter.