Joji Tani (Japanese: 谷譲治, Hepburn: Tani Jōji), known as Screaming Mad George (October 7, 1956 - February 10, 2026), was a Japanese special effects artist, film director, and former musician. He was born in Osaka, Japan, and emigrated to the United States, where he became known for his surreal, grotesque and gory special effects. He collaborated with director and producer Brian Yuzna on many films.