Slam Dunk Festival returns to Hatfield and Leeds, England on May 23-24, 2026, showcasing the best in punk, rock, metal, alternative, and post hardcore music. Headliners Knocked Loose and Good Charlotte lead a diverse lineup that includes notable acts like Sublime and Taking Back Sunday. With 49 artists performing across both locations, the festival features musicians from the United Kingdom, Canada, United States, and Australia. This two-day event offers fans multiple chances to experience the same stellar lineup at either the Hatfield or Leeds venue.

Slam Dunk Festival is a regional two-day multi-venue festival.