Objective: Transgender and gender-nonbinary individuals (TGNB) are disproportionately impacted by obesity. In addition to the associated health impact, obesity represents a significant barrier to accessing gender-confirmation surgery (GCS). The purpose of this study was to determine the prevalence of obesity among TGNB surgical candidates at an urban academic medical center and evaluate the efficacy of self-monitored weight management. Methods: The study was conducted at the Center for Transgender Medicine and Surgery at Mount Sinai in New York City. Data abstraction from a quality improvement database was completed for patients with a documented body mass index (BMI) and a GCS consult from October 2015 through February 2019. A total of 1,457 TGNB patients with a documented BMI and a GCS consult in the historical period of review were included in analysis. Data were abstracted to determine the prevalence of obesity among GCS candidates and evaluate the current default pre-operative self-monitored weight management protocol. Results: Of 1,457 TGNB patients, 382 (26%) were obese (BMI ≥30 kg/m2) at initial surgical consult. In addition, 369 (27%) were obese at a subsequent follow-up, suggesting no statistically significant change in the rate of obesity among evaluated TGNB despite self-monitored weight management (P = .5272). Conclusion: Obesity is a significant barrier to gender affirming surgery for transgender individuals. Self-monitored weight management is an unsuccessful strategy for improvement even among individuals who would be predicted to be motivated.