Yowamushi Pedal (Japanese: 弱虫ペダル, Hepburn: Yowamushi Pedaru; lit. 'Weakling Pedal') is a Japanese manga series written and illustrated by Wataru Watanabe. It began serialization in the 12th issue of Akita Shoten’s shōnen manga magazine Weekly Shōnen Champion in 2008. The series has been compiled into 96 tankōbon volumes in June 2025. The manga has been licensed in North America by Yen Press in 2015.

An anime television series adaptation aired from October 2013 to July 2014, followed by a second season aired from October 2014 to March 2015, a third season aired from January to June 2017, a fourth season aired from January to June 2018, and a fifth season premiered in October 2022. The first three seasons have been licensed by Discotek Media in North America in 2014. A live-action television drama adaptation aired in August 2016. A live-action film adaptation was released on August 14, 2020.

By September 2022, Yowamushi Pedal had over 28 million copies in circulation, making it one of the best-selling manga series. In 2015, the manga won the Best Shōnen Manga award at the 39th Kodansha Manga Awards.

Sakamichi Onoda is an otaku who has just entered high school. In middle school, Onoda did not have any friends with whom he could talk about his interests, and hopes to change that by joining his new school's anime club. However, he is crushed when he discovers the anime club has been disbanded due to lack of interest, and in order to reestablish the club, four new members must join.

Since he was a little boy, Onoda has ridden his city bicycle (referred to as a "mamachari", meaning "Mommy Bike", in the anime)—a simple and bulky bicycle designed for short rides—for transportation and fun. A fellow freshman, and much more serious cyclist, named Shunsuke Imaizumi notices Onoda riding his mamachari and mocks him inwardly until he sees Onoda riding up a steep hill with little effort. Another student named Naruko visits Akihabara to get some plastic Gundam models for his younger brothers and meets Onoda, who catches his attention because of his cycling skill on the mamachari. Later on, both Naruko and Imaizumi try to convince him to join the bicycle racing club at their high school, Sohoku.

Sohoku is a hard-working team that acts as the main school in the story. The team is characterized as being able to overcome internal conflicts and brutal training. For example, Sohoku hosts an intense and gruelling 1000 km training camp every year to determine who will advance to the main race of the series, the Inter-High.

Hakone Academy is the country's largest cycling team, and claims to be made up of “six aces” with many more in reserve. During the first year of the series, it was noted to have 50 club members. Since Hakone is such an expansive team, the selection process of who does, and does not, go to the Inter-High is quite complex. To determine who has the honor of participating in the Inter-High, all of the members race against each other, and only the winners of each group (A - F), are allowed to participate. Furthermore, these groups are divided so that the team takes three all-rounders, two climbers, and up to two sprinters to the Inter-High.

Kyoto Fushimi, or Kyofushi, acts as the third squad in this series and is the wild card of the main three teams. The team has a history as a strong team, where 1st year cyclists would go to become stronger. Its training practices are unknown, but other teams say they were a lot nicer in previous years before Midousuji joined the team.