The 2018 Gamba Osaka season was Gamba Osaka's 25th season in the J1 League and 31st overall in the Japanese top flight. It saw them compete in the 18 team J1 League as well as the J.League Cup and Emperor's Cup competitions. Gamba will begin the season with a new manager in the shape of Brazilian, former Cerezo Osaka boss Levir Culpi who replaced long-standing manager Kenta Hasegawa who moved to FC Tokyo. Culpi was fired after poor form saw Gamba sit in the J1 relegation zone at the halfway point of the season. He was replaced by Gamba Under-23 manager Tsuneyasu Miyamoto on July 23.