A vast majority of recent research indicates that the underrepresentation of women is one of the primary problems that contribute to the gender gap in the STEM (Science, Technology, Engineering, and Math) fields. This gender gap needs to be addressed in order to achieve equal representation and advance the fields of STEM. Previous research has established a relationship between gender-related stereotypes and underperformance among women in the STEM fields. However, matters such as students’ interpersonal concerns and science-related gender identity still remain uninvestigated and unclear in relation to the sense of belonging in the field. Undergraduate freshmen women in STEM (N = 129) were recruited from California State University, Long Beach. Results showed that interpersonal concern was a significant predictor of sense of belonging; however, science-related gender identity was not. Additional suggestions for future research, theoretical and practical implications of the current results are discussed.