Black Summer is a comic book limited series written by Warren Ellis, illustrated by Juan Jose Ryp, and published by Avatar Press starting in June 2007. The plot revolves around the consequences of a superhero, John Horus, who kills the President of the United States and several of his advisers after discovering them to be war criminals. The following seven issues detail the aftermath of the assassination.

Warren Girard Ellis is an English comic book writer, novelist, and screenwriter. He is best known as the co-creator of several original comics series, including Transmetropolitan (1997–2002), Global Frequency (2002–2004) and Red (2003–2004), which was adapted into the feature films Red (2010) and Red 2 (2013). Ellis is the author of the novels Crooked Little Vein (2007) and Gun Machine (2013) and the novella Normal (2016).