The Tales series is a franchise of fantasy Japanese role-playing video games published by Namco Bandai Games (formerly Namco), and primarily developed by its subsidiary, Namco Tales Studio. First started in 1995 with the development of Tales of Phantasia, the series now spans fourteen games in the main series. Additionally, while primarily role-playing games, the series features an extensive line up of spin-off games that often span other genres, and four stand-alone animated productions based on the video games. While many of the spinoffs contain crossover appearancees of characters within the main series, the main series games are largely unrelated to one another unless denoted with their names. (For example, Tales of Xillia and its sequel Tales of Xillia 2.)

Nine out of the fourteen entries in the main series have been localized for North America and Europe, although almost all of the spinoff titles have not been released abroad. While seen as a niche series in English speaking regions, the series is considered very high profile in Japan, just behind other series such as Final Fantasy and Dragon Quest. By December 2007, the series had sold over ten million copies, and by May 2011, it had sold 13 million units worldwide.