The Žižek - Peterson debate, officially titled Happiness: Capitalism vs. Marxism, was a debate between Slovenian philosopher Slavoj Žižek (a Communist and Hegelian) and Canadian psychologist Jordan Peterson (a critic of Marxism) on the relationship between Marxism, capitalism, and happiness.

In the debate, Žižek and Peterson agreed on many issues, including criticism of political correctness and identity politics. They debated the merits of regulated capitalism. Both rejected happiness as a primary goal for individuals and societies.

It took place at Meridian Hall in Toronto on 19 April 2019 and was moderated by Stephen J. Blackwood.