Rebecca Guay is an artist specializing in watercolor painting and illustration. She is mostly known for her work commissioned by Magic: The Gathering,White Wolf, and DC Vertigo comics, World of Warcraft TCG, Wizards of the Coast, Dungeons & Dragons and Bella Sara TCG.

Guay received a degree in Illustration from the Pratt Institute in New York City in 1992.

After the release of Onslaught (2002), it was reported on Magic the Gathering news sites that Guay had been informed that the seven works she created for the set would be her last. In what the sites reported to be her own words: "the new art director, Jeremy Cranford, thinks my work is too feminine for the vision he has for the game.

Amid fan outrage, Wizards of the Coast released a statement clarifying their position—That Guay was never 'fired' but simply not contracted as a freelance artist for Legions (2003), and that her work would be used in future sets:

Wizards of the coast has used Guay's work for at least seven Magic sets and a number of other products since then. One of the commissioned works, a tribute to the controversy, appeared in the 2004 joke set Unhinged: "Persecute Artist" (1BB Sorcery - Choose an artist other than Rebecca Guay. Target player reveals his or her hand and discards all nonland cards by the chosen artist. The torches and pitchforks were no match for Rebecca's fans.) A card satirizing Jeremy Cranford (artwork by Edward P. Beard, Jr) also appears in Unhinged : "Fascist Art Director" (1WW Creature — Human Horror - 2/2 WW: Fascist Art Director gains protection from the artist of your choice until end of turn. Dear Mr. and Mrs. Cranford, After careful analysis of Jeremy's vocational testing, I feel that he is best suited for a career in either torture or art direction.)