Citizens are increasingly concerned with environmental issues and some of them take contentious political actions or adapt their lifestyles to reduce their environmental footprint. Research finds that there is an eco-gender gap in everyday environmental behaviours, with women more active than men. However, studies of the eco-gender gap have infrequently looked at other forms of pro-environmental political behaviours and focused mostly on young people. We contribute to the literature by examining to what extent older women and men differ in a range of pro-environmental political behaviours, using a unique dataset based on a survey of individuals 64 years and older. We find strong evidence of a gender gap in everyday behaviours and political consumerism, but not in relation to contentious forms of political participation. This gender gap in relation to everyday behaviours and political consumerism diminishes with age.