Tidus

is a character in Square Enix's video game series Final Fantasy and the main protagonist of the 2001 role-playing video game Final Fantasy X. A 17-year-old athlete from the city of Zanarkand, he is transported to Spira after Sin destroys Zanarkand. Shortly after arriving there, Tidus meets the summoner Yuna and her guardians and joins them on a pilgrimage to kill Sin after learning that it is his missing father, Jecht. Tidus has appeared in other video games, including the Final Fantasy X sequel X-2, where he can be recruited as a playable character in the international version. He also appears in various Square Enix crossover games and in the Kingdom Hearts series, where he is depicted as a child.

Tetsuya Nomura designed Tidus with a cheerful personality and appearance to contrast with previous Final Fantasy protagonists. Scenario writer Kazushige Nojima wanted to expand the relationship between player and character with monologues describing the game's setting. The narrative was initially focused on the romance between Tidus and Yuna, but Square Enix instead decided to focus on Tidus' relationship with Jecht to have a greater impact on the setting. Tidus is voiced in Japanese by Masakazu Morita, who also performed his motion capture, and in English by James Arnold Taylor; both actors enjoyed voicing the character.