Pstereo (initiated 2007 in Trondheim, Norway) is a music festival arranged at Marinen, Trondheim, every year in August.
The festival is named after Pstereo an album by DumDum Boys, and mainly focuses on music in the genres elektronika, pop and rock. Next to the music the focus is on environmental awareness. Pstereo had 17 500 visitors in 2009. In 2014 the number of spectators had grown to approxemately 25 000.