Multiple sclerosis (MS) is one of the most common neurological disorders and causes of disability in young adults. Although some people with MS experience little disability during their lifetime, up to 60% are no longer fully ambulatory 20 years after onset, with major implications for their quality of life and the financial cost to society. This new publication from the World Health Organization and the Multiple Sclerosis International Federation (MSIF) presents evidence on the global epidemiology of multiple sclerosis and the resources to diagnose, treat, rehabilitate, support and provide services to people with MS. Atlas-MS summarizes information from 112 countries, representing 88% of the global population, thus can be considered as the leading global assessment on multiple sclerosis. The results of the survey reveal a lack of services and resources allocated to the care of people with MS. The situation is of particular concern in most low and middle income countries. It is hoped that this Atlas will enhance knowledge and awareness of the global and regional disparities in resources and services for people with MS and will help in the development of policies and programmes for this group of people.