Marmalade Boy is a Japanese manga series written and illustrated by Wataru Yoshizumi. It was published in Shueisha's shōjo manga magazine Ribon from May 1992 to October 1995 and collected in eight tankōbon volumes. The series was adapted by Toei Animation as a 76-episode anime television series which aired on TV Asahi in 1994 to 1995. This was followed by a prequel theatrical anime movie in 1995. The series was also adapted as a 30-episode live-action television series that was broadcast in Taiwan in 2002. A live-action film adaptation was released in Japan by Warner Bros. Pictures on April 27, 2018.

Ribon is a monthly Japanese shōjo manga magazine published by Shueisha on the third of each month. First issued in August 1955, its rivals are Nakayoshi and Ciao. It is one of the best-selling shōjo manga magazines, having sold over 590 million copies since 1978. Its circulation was in the millions between 1987 and 2001, peaking at 2.3 million in 1994. In 2009, the magazine's circulation was 274,167. In 2010, the circulation dropped to 243,334.