The world wide experience of communication and cooperation of diasporas and origin countries shows various ways and forms how diasporas can contribute towards sustainable development of origin country. Lithuania also has relatively huge diaspora and faces increasing emigration every year. However, it still neglects the potential of it’s diaspora involvement in contributing to well-being of the country. In order to reveal the potential of Lithuanian diaspora the qualitative research was conducted. It used expert interview method with 12 leaders of foreign Lithuanian communities and organizations. The research revealed that Lithuanian diaspora is willing and could contribute significantly to the country’s sustainable development in various areas: scientific, business, cultural and social ones. In order to facilitate this cooperation, Lithuanian government should decrease barriers for cooperation and implement measures that would take into account the diversity of diaspora groups interests and possibilities, provide relevant information about means of engagement and support already existing and new diaspora networks and their initiatives.