George Brown Petty IV (27 April 1894 – 21 July 1975) was an American pin-up artist. His pin-up art appeared primarily in Esquire and Fawcett Publications's True but was also in calendars marketed by Esquire, True and Ridgid Tool Company. Petty's Esquire gatefolds originated and popularized the magazine device of centerfold spreads. Reproductions of his work were widely rendered by military artists as nose art decorating warplanes during the Second World War, including the Memphis Belle, known as "Petty Girls".

Education and early career
George Petty never discussed in detail those artists that influenced him other than J. C. Leyendecker (an artist for The Saturday Evening Post during George's high school days) for his interpretation of men, Coles Phillips for his technique, and Maxfield Parrish for his use of light. However, it can be inferred from his later work that other influences included those artists who were extremely popular in Paris at the time, such as Alfons Mucha, George Barbier and, in particular, the watercolor technique of England's Russell Flint.

"The Petty Girl"
Reid Stewart Austin (The Best of Gil Elvgren) examined the life and art of George Petty in the 192-page Petty: The Classic Pin-Up Art of George Petty. Published by Gramercy in 1997, the lavish volume features a foreword by Hugh Hefner and an introductory essay by Petty's daughter, Marjorie Petty, who was his main model. In The New York Times Book Review famed designer George Lois praised this collection of Petty's creamy creations, commenting:
Just as the cool, unapproachable Gibson Girl was the feminine ideal of young men at the turn of the century, the voluptuous Petty Girl became the ideal of their wide-eyed sons. I'm going on the record to swear that George Brown Petty IV consistently created better-designed women than God, and now I've got a big beautiful book to prove it.
Robert Cummings portrayed George Petty in the biographical musical comedy The Petty Girl (Columbia, 1950), directed by Henry Levin and featuring the film debut of Tippi Hedren as one of the Petty Girls. Nat Perrin's screenplay was based on a story by Mary McCarthy. The film is also notable for several lilting, lighthearted songs composed by Harold Arlen (music) and Johnny Mercer (lyrics), including "Fancy Free" and "I Loves Ya". The large production number at the finale is "The Petty Girl" by Arlen and Mercer, performed by Joan Caulfield (dubbed by Carole Richards), the Petty Girls and a male quartet.