The nascent field of gender-affirming surgery (GAS) for binary and nonbinary transgender adolescents is growing rapidly, and the optimal use of shared decision making (SDM)-including who should be involved, to what extent, and for which parts of the decision-is still evolving. Participants include the adolescent (whose goals might center on aesthetics and functionality), the surgeon (who might focus more on minimizing complications), the referring clinician (whose participation is mandated by present standards of care), and the caregiver (whose participation is required for patients below the age of consent). This article argues that effective, ethical SDM in adolescent GAS care requires a different conceptualization of roles than might be expected in other situations and should be a longitudinal experience rather than a singular event. To claim one AMA PRA Category 1 Credit TM for the CME activity associated with this article, you must do the following: (1) read this article in its entirety, (2) answer at least 80 percent of the quiz questions correctly, and (3) complete an evaluation. The quiz, evaluation, and form for claiming AMA PRA Category 1 Credit TM are available through the AMA Ed Hub TM. Adolescent Gender Surgery Decisions Gender affirmation is, fundamentally, the use of social, medical, and surgical processes to reify individuals' sense of themselves as a gendered being. The nascent field of gender-affirming surgery (GAS) is growing rapidly, particularly in its understanding of optimal techniques and outcomes. This is especially true for adolescent surgeries, as the existing literature predominantly focuses on adults, 1 which is in line with clinical practice guidelines that presently recommend gender-affirming genital surgeries be deferred until the age of majority. 2,3 However, both the World Professional Association for Transgender Health's Standards of Care for the Health of Transsexual, Transgender, and Gender-Nonconforming People and the Endocrine Society's clinical practice guidelines, Endocrine Treatment of Gender-Dysphoric/Gender-Incongruent Persons, state that chest surgery may be performed prior to the age of majority depending on the individual, 2,3 and a number of surgeons acknowledge performing genital surgeries prior to age of majority. 4 In addition, many individuals seek GAS shortly after reaching the age of majority, which suggests that most counseling has already occurred.