Takashi Nishiyama (Japanese: 西山隆志) is a Japanese game director, producer, and video game designer. He is credited to have created the Fatal Fury and Art of Fighting series. Before his career at Capcom, he worked with Irem on Spartan X, better known in the west as Kung Fu Master. He joined SNK in 1988 after he had finished directing the first Street Fighter game with Hiroshi Matsumoto. He is sometimes credited as "Piston Takashi" or "T. Nishiyama".