Background & Aims: Despite the availability of effective therapies for hepatitis B (HBV) and C virus (HCV), only a minority of these patients receive treatment. We systematically reviewed published data on barriers to management for chronic HBV/HCV patients in Europe. Methods: Literature search to identify studies including adult patients with chronic HBV/HCV infection from European countries and data on barriers to treatment. Results: Twenty-five studies including 6253 chronic HBV and 19 014 HCV patients were identified, of which only two were from Eastern Europe. The mean rate of no treatment in HBV patients was 42% being higher in North-Western European countries than Italy (56% vs. 39%, P < 0.001). Immigrants represented the most common barrier to HBV treatment. The mean rate of no treatment in HCV RNA-positive patients was 57%, being highest in Romania (89%), intermediate in France (79%) and lower though still high in other European countries (52%, P < 0.001). The predominant barriers to HCV treatment were lack of financial resources in Romania and direct/indirect limitations of interferon-alfa and/or parenteral drug and alcohol abuse in other countries. The mean rate of no treatment was highest in HCV RNA-positive parenteral drug users (72%) and intermediate in those with HCV-HIV co-infection (64%). Conclusions: A substantial proportion of diagnosed chronic HBV and the majority of diagnosed HCV patients remain untreated. The rates and most importantly the reasons of barriers to treatment in chronic HBV/HCV patients vary widely among European countries supporting the need for country-specific national strategies, resource allocation and implementation of global management policies.Hepatitis B (HBV) and C viruses (HCV) are leading causes of chronic liver disease worldwide and responsible for 1.2-1.5 million deaths annually (1, 2). In particular in Europe, according to the estimations of the European Region of the World Health Organization, there are approximately 14 and 9 million people chronically infected with HBV and HCV and around 36 000 and 86 000 related deaths each year, respectively, with the number of deaths reported to be increasing (3).Over the last 15 years, the efficacy of the therapeutic options for chronic HBV and HCV infections has dramatically improved. Practically all chronic HBV infection can now achieve at least on-therapy virological remission which is associated with improved liver histology and often even reversion of pre-existing histological cirrhosis, reduction in need for liver transplantation and eventually improved survival (4, 5). In patients with chronic HCV infection, sustained virological response, which is equivalent to viral eradication and has been shown to improve survival (6, 7), can be currently achieved in the majority of cases without contraindication for interferon-alfa-based therapies (8, 9), while emerging and future treatment options are expected to further improve the sustained virological response rates to over 90-95% extending the treatment indications ...