Uuum Co., Ltd. (UUUM株式会社, Ūmu kabushiki gaisha) is a Japanese multi-channel network and YouTuber-related label company headquartered in Minato, Tokyo, Japan.

As of April 2020, there are over 10,000 YouTube channels belonging to Uuum,[1] the most famous including HIKAKIN, Hajime Syacho, Tokai On Air, Fischer's, Banbanzai (Youtuber), Yuka Kinoshita, and Mizutamari Bond.

The influencers belonging to Uuum work with many Japanese brands and receive income from creating content around their products.

[2] HIKAKIN and Kamada decided to start managing YouTubers having seen the various problems that YouTubers were facing, such as not knowing how to proceed with business negotiations with companies, and not being able to make a contract with an agency without being a juridical person.

[4] In 2014, interest towards YouTube celebrities increased, and Uuum grew alongside this trend.