"The Monsters of Class 1-A") is a Japanese manga series written and illustrated by Hideki.

It began serialization in Ichijinsha's Monthly Comic Rex magazine in January 2018.

Written and illustrated by Hideki, 1-nen A-gumi no Monster began serialization in Ichijinsha's Monthly Comic Rex magazine on January 27, 2018.

[2] Its chapters have been collected into thirteen tankōbon volumes as of August 2024.

[3] In commemoration of the release of the series' third volume on July 27, 2019, a promotional video was released on Ichijinsha's YouTube channel that same day.