Objectives: Ongoing access to psychosocial support is important to maintain the well-being of people with brain tumor (PwBT) and their families; yet, there is limited knowledge of psychosocial care access. This qualitative study aimed to develop an understanding of psychosocial support pathways specific to PwBT from the perspectives of Australian healthcare professionals. Methods: Semi-structured interviews were conducted with 21 healthcare professionals working in hospital and community services supporting PwBT and their family members. Transcribed interviews were coded and analyzed thematically. Results: The three major themes identified were: (1) Challenges in fitting people into the care system within existing pathways; (2) Benefits of longer-term care coordination and interdisciplinary connections; and (3) Brain tumor affects the whole family. Despite established psychosocial care pathways, service access varied and lacked continuity for individuals with lower-grade glioma and benign tumors across the illness trajectory. Conclusions: Healthcare professionals recognize the need for improved access to care coordination and multidisciplinary psychosocial care tailored to the varying needs of PwBT and their families.