Using interpretative phenomenological analysis, the researchers conducted a qualitative exploration of transgender and gender-expansive students' experiences of genderism while attending women's colleges and universities. Genderism is understood as prejudice or bias that results from a binary view of gender. Ten participants shared their experiences of genderism related to gender identity, gender role, gender expression, relationships, academics, residence life, and university policies and practices. Six themes are presented with support from participant extracts. Implications for faculty, staff, and administrators at women's colleges and universities are discussed, along with considerations for advocacy efforts.