This chapter discusses the claim that radical right parties are typically led and supported by men, and explores various aspects of gender bias as they relate to radical right parties and support for these parties. The first section considers the so-called gender gap in radical right voting, with women being significantly underrepresented among the radical right electorate compared with men. The second section examines how explanations for radical right voting behavior may differ between women and men. Whereas the majority of the research on radical right voting has taken for granted that women and men behave similarly, it shows that the limited available research does indicate some gender differences in the explanations for supporting a radical right party. The final section outlines some ideas for further research and the challenges that lie ahead for scholarship on gender and the radical right.