Percy Hugh Beverley Lyon MC (1893–1986) was a 20th-century British poet and educator, a winner of the Newdigate Prize and headmaster of Rugby School from 1931 to 1948.

He interrupted his studies during the First World War, serving as a lieutenant in the Durham Light Infantry and earning the Military Cross.

In 1919 he also had a number of poems accepted for publication in Oxford Poetry: "The Secret Playroom (Graudenz, 1918)", "The Song of Strength" and "The Deserted Garden".

He went on to publish poetry in periodicals that included the London Mercury, The Oxford Magazine, The Spectator, and the Westminster Gazette.

He was mentor and friend to one of his pupils, John Gillespie Magee, Jr., who later wrote the famous poem "High Flight".