Fate/Hollow Ataraxia is a 2005 PC visual novel video game developed by TYPE-MOON and the sequel to Fate/Stay Night. The word "ataraxia" in the title is a Greek term for "tranquility", giving the title the combined meaning of "empty (or false) tranquility".

The game also was ported to PlayStation Vita, adding full-voice acting, among other enhancements. This version was released in Japan on November 27, 2014.