Pauline Diana Baynes (1922-2008) was an English book illustrator, whose work encompassed more than 100 books.
Baynes is probably best known for her illustrations of The Chronicles of Narnia by Lewis. Years later she provided some new illustrations for The Land of Narnia: Brian Sibley Explores the World of C. S. Lewis by Brian Sibley. When she began work on Narnia, she was already the chosen illustrator of Lewis' friend and colleague J. R. R. Tolkien.
Eventually her drawings would appear in Tolkien's Farmer Giles of Ham, The Adventures of Tom Bombadil, Smith of Wootton Major, Tree and Leaf, and in the poem Bilbo's Last Song, a poster in 1974 and a book in 1990. Baynes also painted the covers for the British 1973 one-volume and 1981 three-volume paperback editions of The Lord of the Rings, and produced illustrated poster versions of the maps from The Lord of the Rings and The Hobbit.
She also illustrated an edition of stories from "The Arabian Nights".