Crust punk (also known as stenchcore or simply crust) is a subgenre of punk rock influenced by the English punk scene as well as extreme metal. The style, which evolved in the early 1980s in England, often has songs with dark and pessimistic lyrics that linger on political and social ills. The term "crust" was coined by Hellbastard on their 1986 Ripper Crust demo.

Crust is partly defined by its "bassy" and "dirty" sound. It is often played at a fast tempo with occasional slow sections. Vocals are usually raspy screams, but can also be grunted/growled. Crust punk takes cues from the anarcho-punk of Crass and Discharge and the heavy metal of bands like Venom, Trouble, Hellhammer, Celtic Frost, Black Sabbath and Motörhead. While the term was first associated with Hellbastard, Amebix have been described as the originators of the style, along with Discharge and Antisect.