Woman and her position toward man in society are always interesting to be discussed. Woman is now labeled by femininity for years and often be associated with several characteristics such as gentle, caring, loving and inferior from man because of the gender stereotype formed by society. By this research, the researcher aimed to analyze the masculine traits of the female character, Margo Roth Spiegelman in Paper Towns novel. This research was a qualitative research and used content analysis as the data analysis technique. This research used Sandra L Bem's Sex Role Inventory as the indicator of masculinity in Margo's character in Paper Towns novel. The result of this research showed that Margo has masculine traits even though she is a woman and they appeared through three aspects of her character: physical, emotional, and behavioral.