Lionel Giles (29 December 1875 – 22 January 1958) was a British sinologist, writer, and philosopher. Lionel Giles served as assistant curator at the British Museum and Keeper of the Department of Oriental Manuscripts and Printed Books. He is most notable for his 1910 translation of The Art of War by Sun Tzu and The Analects of Confucius. Giles was the son of British diplomat and sinologist Herbert Giles.