This article explores what behaviour change, with its associated methods, approaches and policy prescriptions, can offer gender and politics. After outlining the key elements of behaviour change, it considers the potential of its associated methods, primarily field experiments. The third section considers the potential contribution of behaviour change approaches by examining one area – social norms – that has recently become more salient for gender and politics. Finally, it examines behaviour change's gender equality policy implications ('nudges'). It concludes that despite significant problems, a critical, pluralist and problem-driven gender and politics scholarship should engage critically with behaviour change while remaining aware of its limitations.