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.

Non-no is a Japanese women's fashion and lifestyle magazine published by Shueisha. The magazine is headquartered in Tokyo.