shōnen

Shōnen manga (少年漫画; lit. "boys' comics", also romanized as shonen, shounen or syônen) is an editorial category of Japanese comics targeting an audience of mainly adolescent boys. It is, along with shōjo manga (targeting adolescent girls and young women), seinen manga (targeting young adult men), and josei manga (targeting adult women), one of the primary demographic categories of manga and, by extension, of Japanese anime. Shōnen manga is traditionally published in dedicated manga magazines that often almost exclusively target the shōnen demographic group.

Of the four primary demographic categories of manga, shōnen is the most popular category in the Japanese market. While shōnen manga ostensibly targets an audience of young males, its actual readership extends significantly beyond this target group to include all ages and genders. The category originated from Japanese children's magazines at the turn of the 20th century and gained significant popularity by the 1920s.