Corrector Yui (Japanese: コレクター・ユイ, Hepburn: Korekutā Yui) is a Japanese anime television series created by Kia Asamiya. The anime series was produced by Nippon Animation and broadcast on NHK Educational TV from 1999 to 2000. It was licensed for North American release by Viz Media. This series has aired on Cartoon Network outside the United States.

Two manga series were also released: a two volume series by Asamiya and published in Ciao from 1999 to 2000; and a nine volume two-part series by Keiko Okamoto which was published by NHK Publishing. The second manga series was licensed in North America and translated into English by Tokyopop beginning in 2002.

It was created based on the Japanese novels "Nanso Satomi Hakkenden". This series follows a basic Magical girl progression, but Corrector Yui's magic powers all derive from incorporated entirely into her digital avatar as antivirus software for the virtual world, with no real powers granted outside of network.