D.Gray-man is a Japanese anime television series based on the manga series of the same name by Katsura Hoshino. Set in an alternate 19th century, it tells the story of a young Allen Walker, who joins an organization of exorcists named the Black Order. They use an ancient substance, Innocence, to combat a man known as the Millennium Earl and his demonic army of Akuma who intend to destroy humanity.

The series was produced by TMS Entertainment and broadcast for 103 episodes on TV Tokyo from October 2006 to September 2008. A 13-episode sequel series, D.Gray-man Hallow, also produced by TMS Entertainment aired from July to September 2016.