There is very little information on the experiences of transgender and gender diverse (TGD) youth with cancer. To examine clinical characteristics and care trajectories of TGD youth a history of cancer. This case series reviewed records of 2790 pediatric gender clinic patients seen between 2007 and 2022 to identify 14 with a history of cancer diagnosis. Demographics, clinical characteristics, disclosure of gender identity to oncology teams, oncology teams' use of correct names and pronouns, documented interprofessional communication between gender health and oncology teams, and course of medical gender affirmation were reviewed. Of 14 TGD youth with a history of cancer, 11 (78.6%) were diagnosed prior to presenting to the gender clinic (mean [SD]=8.2 [4.7] years), three following initial gender care (mean [SD]=1.1 [0.2] years). Six (42.9%) patients were engaged in annual survivorship care when presenting, and 8 (57.1%) were seen concurrently by both clinics. Nine (64.3%) patients had documented communication between teams. Three-quarters of patients who were seen concurrently by both clinics had documented interprofessional communication. Eight (57.1%) patients received gender affirming hormones, after cancer treatment concluded. TGD youth with cancer experiences present for gender affirming care and merit clinical attention. There was variability in (1) patients' and families' disclosure of TGD identities to oncology teams, (2) whether oncology documentation consistently used patients' correct name and pronouns, and (3) whether there was documented interprofessional consultation between teams. There is need for ongoing improvement in research and clinical protocols for TGD youth with cancer.