Pukkelpop is an annual music festival which takes place near the city of Hasselt, Belgium in mid-to-late August. It is held within a large enclosure of fields and woodland—between a dual carriageway called Kempische Steenweg—in the village of Kiewit, approximately 7 km north of Hasselt. It is the second largest music festival in the country after Rock Werchter, with an attendance rate of 180,000 over the course of the event in 2009.
The program is noted for its wide variety of alternative music, spanning styles such as rock, pop, electronic, dance, hip-hop, punk and heavy metal. The event's organizers aim the festival to be a "progressive and contemporary" musical event. Notable acts that have performed at previous editions include Sonic Youth, The Mission, Ramones, Nirvana, The Sisters of Mercy, Red Hot Chili Peppers, Neil Young, The Smashing Pumpkins, Radiohead, Foo Fighters, Metallica, Green Day, Guns N' Roses, Pixies, Daft Punk, The Prodigy, Nine Inch Nails and Iron Maiden. The term "pukkel" is the Dutch word for "pimple".