Planet Disco is a dance club.
In "The Invisible Pixies," it is seen on the Winx's excursion to Earth. Aisha and Musa go here to dance on their time off. As the evening progresses, they are attacked by a group of people who observed them using magic. They are soon cornered, but Aisha manages to free herself. Then, her, Musa, and the pixies fight against them in order to escape. As they are almost caught, Bloom and Stella arrive and help them out of the club.