BACKGROUND Research focusing on health-related quality of life (HRQoL) in thalassaemia patients remains limited in Saudi Arabia. OBJECTIVE To report on HRQoL outcomes in thalassaemia patients, and study associations with psychosocial and clinical factors. METHODS Thalassaemia patients attending King Abdulaziz University Hospital were sequentially approached for enrolment. HRQoL outcomes were assessed using a validated Arabic version of the Medical Outcomes Study Short form (SF-36). RESULTS This study included 105 individuals with β-thalassaemia major, with a mean age of 22.9 (± 11.7) (range 5-35) years, and 52.4% were male. Participants aged ≥ 14 years had a mean physical HRQoL score of 43.7 (± 10.1) and mental HRQoL score of 46.6 (± 10.5). Participants aged < 14 years, had corresponding scores of 48.4 (± 10.7) and 52.9 (± 8.0), respectively. Physical functioning scores were significantly worse for older patients, and those reporting chronic pain. Lower scores of vitality were associated with older age, chronic pain and history of splenectomy. Older age and history of splenectomy were associated with lower scores of mental health. Controlling for other variables, younger age and higher pretransfusion haemoglobin were associated with better mental HRQoL. Professional workers had better physical HRQoL scores compared to nonprofessional workers.. CONCLUSIONS Controlling for other variables, higher pretransfusion haemoglobin and younger age were associated with better mental HRQoL outcomes in thalassaemia patients. Professionals reported better physical HRQoL outcomes, compared to non-professionals. Preventive and comprehensive care models are needed in Saudi Arabia to improve HRQoL outcomes in thalassaemia patients.