Orbital and ocular tumours represent a heterogeneous spectrum of benign and malignant neoplasms originating from the eyeball, its adnexal structures, and the surrounding orbit. These tumours occur across all age groups and exhibit wide variability in clinical manifestations, biological behaviour, and prognostic outcomes. Ocular tumours commonly encountered include retinoblastoma, uveal melanoma, and conjunctival malignancies, whereas orbital tumours arise from a variety of tissues, including vascular, neural, inflammatory, and lymphoproliferative elements. Accurate diagnosis relies on a sound understanding of orbital anatomy, meticulous clinical evaluation, and the judicious use of imaging modalities and histopathological assessment. Treatment is inherently multidisciplinary and may involve surgery, radiotherapy, chemotherapy, targeted agents, or combined approaches, with the primary objectives of achieving optimal tumour control while preserving vision and cosmetic integrity. Recent advances in imaging, precision radiation techniques, and systemic therapies have led to improved clinical outcomes with reduced treatment-related morbidity. This chapter offers a comprehensive overview of the epidemiology, pathology, diagnostic principles, and current management strategies for orbital and ocular tumours, with relevance to both clinical practice and medical training.