Quidditch is a sport created by British author J. K. Rowling for the Harry Potter series of novels. It is described as an extremely rough but very popular semi-contact sport, played by wizards and witches around the world. Matches are played between two teams of seven players riding flying broomsticks, using four balls and six elevated ring-shaped goals three on each side of the Quidditch pitch (field). In the Harry Potter universe, Quidditch holds a fervent following similar to the position that association football holds as a globally popular sport.

The sport is featured in every Harry Potter book except for the seventh because they do not speak much of the events happening at Hogwarts School of Witchcraft and Wizardry. Harry plays an important position for his house team at Hogwarts: he is the seeker and becomes the captain in the sixth book. Regional and international competitions are mentioned throughout the series. In Goblet of Fire, Quidditch at Hogwarts is cancelled for the Tri-Wizard Tournament, but Harry and the Weasleys attend the Quidditch World Cup. In addition, Harry uses his Quidditch skills to capture a golden egg from a dragon called the Hungarian Horntail (in the first task of the Tri-Wizard Tournament), to capture a flying key in Philosopher's Stone, and on two key occasions in Deathly Hallows — getting hold of Ravenclaw's Diadem, and during the final fight with Voldemort — the "unerring skill of the Seeker" is vitally useful to him in snatching the Elder Wand out of the air. Harry Potter has owned two broomsticks, the Nimbus 2000 and the Firebolt, both of which are destroyed by series end.