Kuja is a fictional character and the main antagonist of the 2000 video game Final Fantasy IX. A member of the same race as the protagonist, Zidane. He exhibits narcissistic and egomaniacal traits, with his plot at first being to overthrow his creator, and then to destroy all life. He appears in other games, such as Dissidia Final Fantasy. His concept art was created by Yoshitaka Amano, which was later reimagined by Toshiyuki Itahana.

Kuja has been the subject of commentary from both critics and fans. In particular, his sexuality and gender have been discussed, since his outfit and mannerisms are effete. Despite him not being shown to be gay or transgender, he has been interpreted as a queer character, particularly through the lens of queer people being villains. His fear of mortality was also the subject of discussion.