Tuska Open Air Metal Festival, commonly shortened to Tuska (Finnish: pain, agony), is a Finnish heavy metal festival taking place annualy in Helsinki. The first Tuska took place in 1998 and the festival has since grown larger every year. The location of the festival has been in Kaisaniemi park in the middle of the city from 2001. However, Tuska 2011 took place at the Suvilahti event field in the Sörnäinen neighbourhood. The festival dates have always been in either June or July.
In recent years the attendance has grown and the festival has drawn around 30.000 people. In 2006, the festival was almost sold out and over a combined three-day total of 33,000 attendees arrived to watch 32 artists, including for example Anathema, Celtic Frost, Opeth, Sodom, Venom, and Finland's own Amorphis and Sonata Arctica.
In 2017 festival will run from June 30 to July 2.