Ang {{nihongo|'''GAINAX Co., Ltd.'''|株式会社ガイナックス|Kabushiki-gaisha Gainakkusu|lead=yes}} ay istudiyong pang-[[anime]] na mula sa [[bansa]]ng [[Hapon]] na kilala sa paggawa ng mga produksyon tulad ng ''[[Neon Genesis Evangelion]]'', ''[[Royal Space Force: The Wings of Honnêamise|Royal Space Force]]'', ''[[Gunbuster]]'', ''[[Nadia: The Secret of Blue Water]]'', ''[[Kare Kano]]'', ''[[FLCL]]'', ''[[Magical Shopping Arcade Abenobashi]]'', at ''[[Gurren Lagann]]'', na natamo ang pagbubunying kritikal<ref>"Considered one of the top 10 films of 1987 by Japanese film critics, The Wings of Honneamise is..." [https://www.wired.com/wired/archive/3.04/anime_pr.html "Heads Up, Mickey: Anime may be Japan's first really big cultural export"], Issue 3.04 - Abr 1995, ''[[Wired (magazine)|Wired]]'' (sa Ingles)</ref><ref>Natamo ng istudiyo ang gawad na Anime Grand Prix mula sa ''[[Animage]]'' ng sampung beses mula noong 1990.</ref> at komersyal na tagumpay. Kumita ang ''Evangelion'' ng higit sa 150 bilyong [[yen]], o tinatayang {{US$}}1.2 bilyon.<ref>{{cite web |url=http://www.sponichi.co.jp/entertainment/news/2007/02/12/02.html |archiveurl=https://web.archive.org/web/20070214063924/http://www.sponichi.co.jp/entertainment/news/2007/02/12/02.html|title=スポニチ Sponichi Annex ニュース 芸能|archivedate=14 Pebrero 2007|publisher=sponichi.co.jp|accessdate=7 Mayo 2015|url-status=dead|language=[[wikang Hapon]]}}</ref> Sa diskusyon sa [[Tekkoshocon]] noong 2006, sinabi ni [[Matt Greenfield]] na kumita ang ''Evangelion'' ng higit sa {{US$}}2 bilyon;<ref>{{cite speech
