Monthly Shōnen Jump was a shōnen manga magazine which was published monthly in Japan by Shueisha from 1970 to 2007 under the Jump line of magazines. It was the sister magazine to Weekly Shōnen Jump.

Shueisha Inc. is a Japanese publishing company headquartered in Chiyoda, Tokyo, Japan. Shueisha is the largest publishing company in Japan. It was established in 1925 as the entertainment-related publishing division of Japanese publisher Shogakukan. The following year, Shueisha became a separate, independent company.