This special issue brings to a close a series of three issue of this journal that have sought to expand the philosophical vocabulary of those concerned with business ethics. Previous issues treated the work of Emmanuel Levinas (Business Ethics: A European Review 2007, 16:3) and Jacques Derrida (Business Ethics: A European Review 2010, 19:3), whereas this issue is organised around engagements with the work of Alain Badiou. The three issues together seek to show ways in which the idea of the ethical, in all of its variety, poses grave challenges to the continued practice of capitalist business enterprise. The editorial introduction to this issue introduces the work of Alain Badiou, some of the specific challenges his thought poses for business and business ethics and the papers included in the special issue.