Adolescence is a time of identity exploration, and preliminary evidence indicates the ways adolescents are describing their sexual and gender identities (SOGI) are changing. A nuanced understanding of SOGI is necessary for valid assessment in developmental research. Current measures do not capture the diversity of emerging identities among young people. Our study analyzed a national sample of 17,112 sexual and gender minority adolescents (13-17 years) to better understand how identity labels are reported across sexual, gender, and ethnoracial minorities. Adolescents reported 26 distinct SOGI categories; 24% of adolescents utilized nontraditional SOGI labels, such as pansexual and nonbinary. These identifications varied significantly as a function of ethnoracial identity. Results have implications for how scholars conceptualize and measure SOGI among adolescents.