Although women have made significant progress in the work force and in education, gender gaps still exist in many industries and occupations, including science, technology, engineering, and math (STEM) fields. This research aimed to understand how undergraduate women negotiate gender within STEM fields, looking specifically at these women's experiences related to gender as they pursue STEM academic majors. The findings of the study suggest that (a) undergraduate women are constantly negotiating gender as they are pursuing STEM majors, (b) undergraduate women in STEM fields are not necessarily conscious of gender and its potential impact on their experiences, and (c) the women in the study perceived a certain image of what a woman in a STEM field was expected to look like and how she was expected to behave.