Opel Arena is a multi-purpose stadium in Mainz, Rhineland-Palatinate, Germany that was opened in 2011. It is used for football matches and hosts the home matches of the German Bundesliga side Mainz 05. The stadium has a capacity of 34,034 people, of which 19,700 seated, and replaces the Bruchweg stadium, Stadion am Bruchweg.
The stadium was originally named Coface Arena (German pronunciation: ) after a sponsorship deal with COFACE. In July 2016, the stadium arrived at its current name, per a naming rights agreement with Opel.