Feminist theorists have suggested that feminism provides a number of benefits for women, particularly regarding self-evaluations. However, most studies have conflated feminist attitudes and feminist identity. The main goal of this study was to assess the differential relationships of feminist attitudes and feminist identity to self-efficacy. Four hundred thirty-five students were surveyed at the beginning and end of their women's and gender studies (WGS) classes. In general, feminist attitudes and feminist identity were related to self-efficacy variables at pretest and to change in these variables over time. Feminist identity partially mediated the relationship between feminist attitudes and self-efficacy. Additionally, the results of this study generally support previous findings regarding the effect of WGS classes on students' feminist attitudes, feminist identity, and self-efficacy. Implications of these findings for the importance of feminist identity are discussed.