Seiji Mizushima (水島 精二, Mizushima Seiji?, born on January 28, 1966 in Fuchū, Tokyo) is a Japanese anime director. He has directed such series as Slayers Next, Shaman King, Fullmetal Alchemist, and more recently, Mobile Suit Gundam 00, Un-Go, and Natsuiro Kiseki, an original series from Sunrise.