Although populism is an ideologically fluid political vehicle, it is not one that is intrinsically anti-business. Indeed, different varieties of populist parties may encourage business activity for utilitarian ends, but with their own ideas on what businesses should be doing. This reality implies that initiatives not related to national greatness or priorities as defined by the populist leadership may be viewed as redundant. Key among such initiatives would be corporate social responsibility (CSR). In a populist environment, it is possible that (...) firms may divert resources away from broad-based CSR under pressure from populist governments. This article explores the relationship between populist governance and CSR with an econometric examination of over a thousand firms in 13 countries under both pro- and anti-business populist governments at varying times from 2012 to 2020. Using dynamic panel data methods, we find strong evidence that firms substitute away significantly from CSR under populism. This effect grows significantly larger under anti-business populists. (shrink)