Mark Fisher (11 July 1968 – 13 January 2017), also known under his blogging alias k-punk, was an English writer, music critic, political and cultural theorist, philosopher, and teacher based in the Department of Visual Cultures at Goldsmiths, University of London. He initially achieved acclaim for his blogging as k-punk in the early 2000s, and was known for his writing on radical politics, music, and popular culture.

Fisher published several books, including the unexpected success Capitalist Realism: Is There No Alternative? (2009), and contributed to publications such as The Wire, Fact, New Statesman and Sight & Sound. He was also the co-founder of Zero Books, and later Repeater Books. After years intermittently struggling with depression, Fisher died by suicide in January 2017, shortly before the publication of The Weird and the Eerie (2017).