Case Closed, also known as Detective Conan , is a Japanese detective manga series written and illustrated by Gosho Aoyama. It has been serialized in Shogakukan's shōnen manga magazine Weekly Shōnen Sunday since January 1994, with its chapters collected in 105 tankōbon volumes as of April 2024. Due to legal problems with the name Detective Conan, the English language releases from Funimation and Viz Media were renamed to Case Closed. The story follows the high school detective Shinichi Kudo, whose body was transformed into that of an elementary school-age child while investigating a mysterious organization. Generally, he solves a multitude of cases by impersonating his childhood best friend's father and various other characters.

Manga are comics or graphic novels originating from Japan. Most manga conform to a style developed in Japan in the late 19th century, and the form has a long history in earlier Japanese art. The term manga is used in Japan to refer to both comics and cartooning. Outside of Japan, the word is typically used to refer to comics originally published in Japan.