Final Fantasy XIV (ファイナルファンタジーXIV, Fainaru Fantajī Fōtīn^?), also known as Final Fantasy XIV Online, is the fourteenth installment in the Final Fantasy series. It was released in September 2010 for Microsoft Windows, with a PlayStation 3 port in development. The game is a massively multiplayer online role-playing game and is developed and published by Square Enix. The game takes place in a land called Hydaelyn, mainly in a region named Eorzea, which has a contemporaneously aesthetic blend of science fiction and classic fantasy elements. The game was released in Japanese, English, French, and German.

The cheaper "Standard Edition" Windows version of the game was released on September 30, 2010, while the "Collector's Edition" was released about one week earlier, and servers officially launched at 18:00 PDT on September 22, 2010. The PlayStation 3 version was originally planned to be released in March 2011, but owing to the game's initial reception, subsequent staff changes, and a desire not to "release a simple conversion of the Windows version in its current state, but rather an update that includes all the improvements", the release has been delayed. The game has shipped 630,000 copies worldwide as of November 4, 2010.

Final Fantasy (ファイナルファンタジー, Fainaru Fantajī^?) is a media franchise created by Hironobu Sakaguchi, and is developed and owned by Square Enix (formerly Square). The franchise centers on a series of fantasy and science fantasy role-playing video games (RPGs), but includes motion pictures, anime, printed media, and other merchandise. The series began in 1987 with the eponymous video game conceived by Sakaguchi as his last-ditch effort in the game industry; the title was a success and spawned sequels. The video game series has since branched into other genres such as tactical role-playing, action role-playing, massively multiplayer online role-playing, racing, third-person shooter, and fighting.

Although most Final Fantasy installments are supposedly independent stories with different settings and main characters, they feature identical elements that define the franchise. Recurring elements include plot themes, character names, and game mechanics. Plots center on a group of heroes battling a great evil while exploring the characters' internal struggles and relationships. Character names are frequently derived from the history, languages, and mythologies of cultures worldwide.