The objective of mobile libraries is to ensure equal access to library services to those without acces to a stationary library. The importance of the mobile library service lies in raising the quality of life, through better acces to education, information, and quality of leisure time. The most numerous users are children - mobile library helps them to increase access to technology, to develop a love for reading and a desire for lifelong learning. In addition to the books themselves, they provide a gathering place in rural or remote settings, offering a place to meet, share stories and participate in social events. Besides providing services to users in rural and isolated areas, today, mobile libraries are increasingly addressing different, vulnerable categories of users, such as children, the elderly, people with disabilities, prisoners, providing them with significant social services. The beginning of the activity of mobile libraries in Croatia was recorded at the beginning of the 20th century, and currently there are nine mobile library services operating in Croatia with a total of 13 vehicles, eight in the counties and in the City of Zagreb. Considering the offer of library materials and the quality of accompanying services and taking into account specific categories of users, Croatian mobile libraries are successfully following European and world trends. Thus, Croatian mobile libraries join other projects aimed at combating the problem of social exclusion, which, among other things, implies an effort to provide everyone with equal access to knowledge, information and cultural content.