Following the widespread adoption and institutionalization of gender mainstreaming worldwide, a demand has grown for experts and trainers to support the implementation of policies and programmes dedicated to gender equality. In political economy terms, there is now a clear labour market for knowledge and expertise on gender, into which hundreds of feminist and non-feminist gender experts have been drawn to provide these services to national, regional and international institutions. Unsurprisingly, for many feminist scholars the marketization and professionalization of gender and feminist knowledge has proved problematic. Moreover, there is little agreement about the extent to which transferring knowledge on gender has led to feminist outcomes, or indeed been guided by feminist principles and practices. In this chapter, I address some of the key debates and issues involved in the political economy of gender expertise, and suggest some avenues for moving forward.