This book explores the cancer experiences of LGBTIQ+ people, drawing on two of the largest mixed-methods studies conducted in this area. It addresses the invisibility of sexual and gender minorities in cancer research and care,highlighting the urgent need for inclusive, culturally safe practice that recognises diverse identities, bodies, and relationships. Based on data from over 900 LGBTIQ+ patients and carers, the book reveals higher rates of distress, discrimination, and barriers to care compared to the general cancer population. It examines the impact of cancer on psychologicalwellbeing, LGBTIQ+ identities, sexuality, and survivorship, for gay, lesbian, bisexual, queer, trans, and intersex participants, across cancer types and age groups. Using an intersectional lens, the book identifies how overlappingforms of marginalisation shape cancer experiences and outcomes. At the same time, it identifies protective factors such as chosen family, affirming care, and LGBTIQ+ community support. It provides actionable recommendations for improving oncology education, policy, and practice, making the case for systemic reform to address health inequities in LGBTIQ+ cancer care. This book is intended for healthcare professionals, researchers, educators, policy makers, and community advocates seeking to improve cancer care for LGBTIQ+ people. It will also be of interest to those working in health equity, public health, and social justice.