Tony M. DiTerlizzi (born September 6, 1969) is an American fantasy artist, children's book creator, and motion picture producer.

DiTerlizzi created The Spiderwick Chronicles series with Holly Black, and was an executive producer on the 2008 film adaptation of the series. He won a Caldecott Honor Medal for his adaptation of The Spider and the Fly. In the gaming industry, he best known for his work in the collectible card game Magic: The Gathering and on the Planescape product line for the Dungeons & Dragons role-playing game.

DiTerlizzi was born into an artistic household in Los Angeles, California in 1969, the first of three children. The name DiTerlizzi means "from Terlizzi", a village in Italy's Pulia province. He grew up in South Florida where he attended South Fork High School. He went to college at the Florida School of the Arts and The Art Institute of Fort Lauderdale where he earned a graphic design degree in 1992.

During his childhood he was introduced to the work of a variety of artists including Norman Rockwell and Dr. Seuss, that he cites as major creative influences. "Many good fantasy artists will tell you their influences are Frazetta or Boris Vallejo. Realizing this, I went for more diverse influences, since it seemed to me that most current fantasy work has that same oil-painted feel." DiTerlizzi was influenced by artists such as Heironymus Bosch and Leonardo da Vinci to early 1900s magazine artists (Maxfield Parrish, Heinrich Kley) to classic children's book illustrators (Arthur Rackham, Ernest Shepard, John Tenniel) to offbeat modern fantastists (Brian Froud, Moebius, William Stout, Jim Henson). Another inspiration was David Trampier, who illustrated much of AD&D's first Monster Manual, which DiTerlizzi recalled as his favorite book as a child: "I would copy Trampier's drawings over and over."