The relations between self-reported aspects of gender identity and sexuality were studied in an online sample of cisgender (n = 4,954), transgender (n = 406), and gender-diverse (n = 744) groups. Aspects of gender identity and sexual fantasies, attraction, behavior, and romantic relations were assessed using the Multi-gender Identity Questionnaire (Multi-GIQ) and a sexuality questionnaire. Results show a wide spectrum of gender experiences and sexual attractions within each group, an overlap among the groups, and very weak relations between atypical gender identity and atypical sexuality. At the group level, aspects of gender identity and sexuality were mainly predicted by gender and sex-gender configuration, with little contribution of sex assigned at birth. A principal component analysis (PCA) revealed that measures of gender identity and of sexuality were independent, the structure of sexuality was mostly related to gender, whereas the structure of gender identity was mostly related to sex-gender configuration. The results of both approaches suggest that measures of gender identity could roughly be divided into three classes: one including feeling as a man and feeling as a woman; a second including measures of nonbinary and "trans" feelings; and a third including feeling as a "real" woman and feeling as a "real" man. Our study adds to current scientific data that challenge dichotomous conventions within gender identity and sexuality research. Possible social and clinical implications are discussed.The idea that biological sex, gender identity, and sexual orientation are directly linked has long prevailed in scientific research (for review, see Rees-Turyn, Doyle, Holland, & Root, 2008). According to this view, each of two biological sexes (male/ female) is associated with a typical, coherent gender identity (boy/man, girl/woman) and sexual attraction toward the "other" 1 sex (Diamond & Butterworth, 2008;Richardson, 2007). Relatedly, it is often assumed that atypical development of one construct (biological sex, gender identity, or sexual orientation) leads to atypical development of the other constructs (for a critical review of this assumption, see Jordan-Young & Rumiati, 2012;Ponse, 1978;Richardson, 2007).The existence and experiences of bisexual individuals and individuals with nonbinary gender identities challenge the binary conceptualization of sexual orientation and gender identity, respectively. Indeed, studies of sexual orientation have revealed that it is a multidimensional construct (Vrangalova & Savin-Williams, 2012) that is better defined as a spectrum rather than categorically (reviewed in Savin-Williams, 2016). Similarly, narratives of transgender individuals (i.e., individuals whose self-labeling is different from their birth-assigned category) reveal that while some may identify with the "other" biological sex unequivocally (Bockting & Coleman, 2007;Girchick, 2008;Wilson, 2002), others may embrace identities that reject the gender binary by incorporating both male and female