Introduction: Despite consistent evidence of poor mental health among what is a relatively large population group, research examining bisexual mental health remains sparse.

Aim: To identify the psychosocial needs of people who are bisexual and establish factors that may support or inhibit access to appropriate psychosocial interventions and supports.

Method: A qualitative evidence syntheses of the empirical evidence.

Results: A total of 15 papers were included in the review. The PRISMA process was used. Following data analysis, four main themes emerged that were (a) experiences of being bisexual, (b) mental health experiences and concerns, (c) service access and responses and (iv) communities and supports.

Discussion: Bisexual people have unique and specific psychosocial support needs that relate to, but are also different from, the needs of the broader LGBTIQ+ community. This study provides valuable insights into how future policy, practice, education and training and research can better address the needs of this highly vulnerable group.

Implications for Practice: This study highlights the psychosocial complexities associated with bisexuality and provides evidence for the need for improvement in current support services to ensure inclusivity and culturally competent care.