The Oz Academy Openweight Championship is a women's professional wrestling championship owned by the Oz Academy promotion.

The reigning champion is referred to as the "Wizard of Oz".

[1] The championship, which is situated at the top of Oz Academy's championship hierarchy, was introduced on March 10, 2007, when Aja Kong defeated Chikayo Nagashima in the finals of a tournament to become the inaugural champion.

[2] Aja Kong was the first champion in the title's history.

Mio Shirai's only reign of four hours and two minutes[7] is the shortest in the title's history.