The Jewel Star Grand Prix (ジュエルスターグランプリ) is an event in Jewelpet Twinkle.

The event takes place every 12 years. Anyone who wishes to enter must be in one of the magic academies around Jewel Land and must have gathered 12 Jewel Stones by the time the event is due to start. The contestants participate in competitions of varied nature and the final winner will be awarded the title of Jewel Star, giving them a magical crown that can grant three of their wishes.

Historically, the first Jewel Star Grand Prix was held inside Jewelina's castle. The winner of the last Grand Prix before the events of the series was Judy and her Jewelpet Prase.