Groezrock is an annual music festival that took place in Meerhout, Belgium. It started as a small rock and pop festival with one stage and a few hundred people attending, but evolved into a large punk rock/hardcore punk festival, with attendances exceeding 30,000.

The festival had one stage until 2003, when it added a second stage called Back-to-Basics, which was reserved for more hardcore-oriented bands. Since 2006 the festival has taken place over multiple days, and grew to three stages in 2009 and four stages in 2012.

It was announced in October 2017 that the 2018 edition of Groezrock would not be taking place in the Spring, and would instead be an indoor festival in the autumn. The festival have stated that they will be "back in full force" with the usual format in 2019.

1992: Grandma's Toy, Buckle Juice, Dinky Toys, Pitti Polak

1993: Give Buzze, The Establishment, Ashbury Faith, The Scabs

1994: One Hes, Inna Nip, Rusk, Groggy's Crawl, Thermos, Burma Shave, Metal Molly, Jack of Hearts, Soapstone, B.J. Scott

1995: Oxid, Cesspool, Quip, Dildo Warheads, Mutilated, Deeper, Brotherhood Foundation, L.A. Doors

1996: Small Yellow Fish, Protest, Underdog!?, Cooper, Def Real, The Romans, Brotherhood Foundation, Deviate