The European Regional Science Association (ERSA) is the supranational grouping of national regional science associations across Europe. ERSA members are academics, policy professionals and researchers interested in spatial economics and planning, regional and local development and related issues. They are drawn largely from the disciplines of economics, geography and planning. There are presently 20 active associations (commonly named ’sections’), some, such as the German or French speaking sections, organized on linguistic groupings and covering more than one country. Constituent associations range in size from more than 700 members to 27. The largest sections have their own national professional organizers. In total, ERSA has some 3500 members in its constituent associations.

The Pacific Regional Science Conference Organisation (PRSCO) was established at the 7th Annual Meeting of the Western Regional Science Association (WRSA) in San Diego, February 1-4, 1968. The first conference of PRSCO was held at the East-West Center, University of Hawaii, August 26-29, 1969. Subsequently, full conferences and smaller meetings have been held in many countries in the Pacific Rim area. A full international conference is held every second year and a smaller summer institute in alternate years. The PRSCO enhances and facilitates exchange of research information in the field of regional science among members of Membership Sections of the PRSCO, as well as the exchange of this information in the Pacific Rim area between such members and other persons with an interest in regional science. The PRSCO is a federation of the following affiliated sections/associations of the Regional Science Association International in the Pacific Rim Area. 

The Latin America Regional Science Association (LARSA) represents the affiliated and common interests of the various regional science organizations of the countries in Latin America and the Caribbean. LARSA operates as an objective, scientific body without political, social, financial, or nationalistic bias. It supports its objectives by promoting acquaintance and discussion among regional scientists and with scholars in related fields, by encouraging the publication of scholarly studies, and by performing services to aid the advancement of the field of regional science. LARSA serves as the organizational body representative of the interests of its institutional and individual members with respect to the RSAI. It affiliates sub-national, national or regional sections of the RSAI located on Latin America and the Caribbean. 

The North American Regional Science Council (NARSC) promotes the scholarly exchange of ideas and knowledge that apply to urban and regional phenomena in North America and across the globe.The association fosters exchange across academic disciplines and builds on the understanding that urban and regional issues are best addressed by utilizing tools, methods, and theoretical frameworks specifically designed for regional analysis, as well as concepts, procedures, and analytical techniques of the various social and other sciences. The association organizes an annual national conference that provides a forum for interaction and discussion, and sponsors scholarly regional science journals for the dissemination of research and ideas. NARSC is an objective, scientific body without political, social, financial, or nationalistic bias.