Case Closed , known as Detective Conan in Japan and most other countries, is a detective manga and anime series written and illustrated by Gosho Aoyama and serialized in Weekly Shōnen Sunday since 1994. In the English world, it was renamed "Case Closed" due to legal issues concerning the name with that of the Conan the Barbarian franchise.

Case Closed follows the adventures of Jimmy Kudo, a young detective inadvertently turned into a prepubescent boy by a secret criminal organization when they knock him out and give him a drug that was supposed to kill him, but backfires.

Case Closed is adapted into an anime series by the animation studio Tokyo Movie Shinsha, directed by Kenji Kodama and Yasuichiro Yamamoto, and airs in Japan on Nippon Television, Yomiuri TV and Animax. The first episode aired on January 8, 1996, with 509 episodes as of July 14, 2008. The series has seen high levels of popularity in both manga and anime formats in Japan since its reception, and has also been adapted into 12 Golden Week movies, with the first released on April 17, 1997, and one movie released each year since. Ten of the movies held a top 10 box office position in the year they were screened. In addition, nine OVAs have been released.