Bee Train Production (Japanese:ビィートレイン株式会社 | Hepburn: Biītorein Kabushikigaisha | commonly referred to simply as Bee Train) is a Japanese animation studio founded by Kōichi Mashimo in 1997. Since their involvement with Noir, .hack//Sign, and Madlax (among other series) they have a strong following in the yuri fandom for being involved in series portraying strong female leads with speculatively ambiguous relationships.