RuriDragon (Japanese: ルリドラゴン, Hepburn: Ruridoragon) is a Japanese web manga series written and illustrated by Masaoki Shindo [ja]. It was originally a one-shot published in Shueisha's Jump Giga magazine in December 2020, before being serialized in Weekly Shōnen Jump starting in June 2022. Following an 18-month hiatus, the series was moved to Weekly Shōnen Jump's digital version and the Shōnen Jump+ service in April 2024. Its chapters have been collected into four tankōbon volumes as of November 2025.

Ruri Aoki wakes up one day and notices that horns started growing from her head. When asked about it, her mother reveals that she is actually a half-dragon. Despite this revelation, Ruri tries to continue living a normal life, though it is more challenging than she thought.

Written and illustrated by Masaoki Shindo [ja], RuriDragon was initially a one-shot published in Shueisha's Jump Giga magazine on December 28, 2020. It began serialization in Weekly Shōnen Jump on June 13, 2022. On August 1, 2022, Weekly Shōnen Jump announced that the series would go on indefinite hiatus due to Shindo's health. The first tankōbon volume was released on October 4, 2022. As of November 2025, four volumes have been released.

On February 21, 2024, it was announced that RuriDragon would resume its serialization, publishing five chapters in Weekly Shōnen Jump from March 4 to April 1, before moving to a biweekly schedule in the magazine's digital version and the Shōnen Jump+ service starting on April 22.

Viz Media and Shueisha's Manga Plus platform are publishing the series digitally in English. In May 2024, Viz Media announced that it would release the manga in print format; the first volume was published on January 7, 2025.

These chapters have yet to be published in a tankōbon volume.

Shueisha released a voice comic adaptation of the one-shot in September 2021, and adaptations of the first three chapters in September and October 2022; they feature Chiaki Omigawa as the voice of Ruri Aoki. In July 2022, a set of digital stickers based on the series was released in the instant messaging service Line. A promotional video for the third volume, animated by Coalowl and featuring music by Zutomayo, was released on March 3, 2025.

By October 2022, RuriDragon had 200,000 copies in circulation; it had over 850,000 copies in circulation (including digital versions) by March 2025, and over 1.1 million copies in circulation by November 2025. The first volume debuted at number seven on Oricon's weekly manga chart, with recorded sales of 74,874 copies; the second volume entered the chart at fourth place with 77,508 copies sold; the third volume debuted at seventh place with 72,514 copies sold; the fourth volume debuted at second place with 56,184 copies sold. The manga ranked first in the "Nationwide Bookstore Employees' Recommended Comics of 2023" survey answered by bookstore clerks in Japan, who described the series as "a warm story that accepts diversity without hesitation". RuriDragon was also nominated in the 2023 eBookJapan [ja] Manga Award. The series ranked ninth in the 2024 edition of Takarajimasha's Kono Manga ga Sugoi! list of best manga for male readers, tying with Suna no Miyako. It ranked second in the Web Manga category of the 2024 Next Manga Awards.