Bibi Blocksberg is a German audio theatre series for children, created in 1980 by Elfie Donnelly. The main character is a girl called Bibi Blocksberg, who is a witch. As of winter 2008, there have been 92 episodes. The original title of the series was Eene meene Hexerei. This title was used for the first seven episodes, after which the series was renamed to Bibi Blocksberg. The first episodes were later released under the new title and with a new cover. The old episodes are very sought after among collectors. The length of the episodes originally varied between 35 and 40 minutes and nowadays between 40 and 45 minutes. An exception is episode #78 with a length of 52 minutes.
In the series, Bibi, who is fond of playing practical jokes, experiences numerous adventures with her friends. Magic often plays a major part, and often leads to troubles, and Bibi's mother, who is also a witch, must come to set things straight. Bibi's antagonist is often the mayor of Neustadt, who is presented as lazy and incompetent. This leads to conflict with the helpful Bibi.
The surname of Bibi is a reference to the old name of the Brocken, a mountain in Saxony-Anhalt (Germany) that is traditionally connected with witches (Walpurgis Night), most famously in Goethe's Faust.