Open'er Festival is a music festival which takes place on the North coast of Poland, in Gdynia. It is considered one of the biggest and most popular annual music festivals held in Poland. The first edition of the festival was organized in Warsaw in 2002 as Open Air Festival. The main organizer of the festival is the concert agency Alter Art. Open’er Festival was given the Best Major Festival prize at the European Festivals Awards ceremony in 2009 and 2010.