Blue Lock (Japanese: ブルーロック, Hepburn: Burū Rokku) (stylized as BLUELOCK) is a Japanese manga series written by Muneyuki Kaneshiro and illustrated by Yusuke Nomura [ja]. It has been serialized in Kodansha's Weekly Shōnen Magazine since August 2018, with its chapters collected in 36 tankōbon volumes as of November 2025.

An anime television series adaptation produced by Eight Bit aired from October 2022 to March 2023. An anime film adaptation based on the Episode Nagi spin-off manga premiered in April 2024. A second season, subtitled vs. U-20 Japan, aired from October to December 2024. A third season has been announced. A live-action film adaptation is set to premiere in Japan in Q3 2026.

By September 2025, the manga had over 50 million copies in circulation worldwide, making it one of the best-selling manga series of all time. In 2021, Blue Lock won the 45th Kodansha Manga Award in the shōnen category.

The Japan national team finished 16th in the 2018 FIFA World Cup. The Japan Football Union hires the football enigma Jinpachi Ego. His masterplan to lead Japan to stardom is Blue Lock, a training regimen designed to create the world's greatest egotistic striker. Those who fail Blue Lock will never again be permitted to represent Japan. Yoichi Isagi, an unknown high school football player who is conflicted about his playing style, decides to join the program competing against 299 other players to become the best striker in the world.

Written by Muneyuki Kaneshiro and illustrated by Yusuke Nomura [ja], Blue Lock started in Kodansha's Weekly Shōnen Magazine on August 1, 2018. Kodansha has collected its chapters into individual tankōbon volumes. The first volume was released on November 16, 2018. As of November 17, 2025, 36 volumes have been released.

In January 2021, Kodansha USA announced that it had licensed the manga for English digital release in North America, starting on March 16, 2021. In January 2022, Kodansha USA announced that it would release the manga in print. In July 2025, Kodansha USA announced that it would publish the manga in an omnibus edition starting in Q2 2026.

A spin-off manga focusing on Seishiro Nagi, titled Blue Lock: Episode Nagi (ブルーロック-EPISODE 凪-), was serialized in Kodansha's Bessatsu Shōnen Magazine from June 9, 2022, to July 9, 2025. The spin-off is written by Muneyuki Kaneshiro and illustrated by Kōta Sannomiya. Its chapters were collected in eight tankōbon volumes, released from October 17, 2022, to August 12, 2025. Kodansha has published the series in English on its K Manga service. In October 2023, Kodansha USA announced that the manga is planned to be published in print. The first volume was released on October 15, 2024.

An anime television series adaptation was announced on August 12, 2021. The series is produced by Eight Bit and directed by Tetsuaki Watanabe, with Shunsuke Ishikawa serving as assistant director, Taku Kishimoto overseeing the series' scripts, Masaru Shindō providing the main character designs and serving as chief animation director, Hisashi Tojima serving as a chief action director, and Jun Murayama composing the music. The series' first season ran for 24 episodes from October 9, 2022, to March 26, 2023, on TV Asahi's NUMAnimation programming block. The first opening theme song is "Chaos ga Kiwamaru" (カオスが極まる; "Chaos Reigns"), performed by Unison Square Garden, while the first ending theme song is "Winner", performed by Shugo Nakamura. The second opening theme song is "Judgement", performed by Ash Da Hero, while the second ending theme song is "Numbness Like a Ginger", performed by Unison Square Garden.