| African Data Dissemination Service (ADDS) | The ADDS is part of the USBS' Famine Early Warning System project and contains various geospatial and attribute data available for download |
| Ancient World Mapping Center | Promotes cartography, historical geography, and geographic information science as essential disciplines within the field of ancient studies |
| Australia New Zealand Land Information Council (ANZLIC) | Provides numerous spatial links |
| Baltic GIS Portal | On-line delivery of spatial data, produced or processed at the Institute of Ecology of Vilnius University |
| Baltic Sea Region GIS, Maps, and Statistical Database | Available data sets include administrative units, arable & pasture lands, coastline, land cover, population density, sub-watershed drainage basins, and wetland distribution |
| British Antarctic Survey | Arctic related mapping resources |
| CIRC Interactive Mapping | Access to interactive maps by location |
| Compendium of On-Line Soil Survey Information | Provides geographic databases on soils of particular regions |
| Danmark Infodatabase of Geodata | English Version Unavailable |
| Download Natural Earth | Downloads of landcover, shaded relief, and water |
| Earth Observation Consulting Services | Includes satellite data and thematic mapping services |
| Earth Resources Observation and Science | Source for land information from the USGS |
| EarthNC - Nautical Data for a Digital World | EarthNC Plus provides a nautical chart collection for google earth |
| ESRI Explorer | Data available via virtual globe |
| Ethnologue: Languages of the World | An encyclopedic reference work cataloging all of the world's 6,912 known living languages |
| Eurographics | 3 pan-European geographic datasets, EuroBoundary, EuroGlobal, EuroRegional; mostly administrative boundaries and topography |
| Geography Network | This web site, which is managed by ESRI, contains data published by city, county, state, and national agencies, as well as academic, international, corporate, and non-profit sources |
| GIS Data Warehouse - Spatial Hydrology | Spatial Hydrology has assembled the GIS Data Warehouse as a catch-all list for on-line geospatial data providers |
| GISFish | Global Gateway to GIS, remote sensing, and mapping for aquaculture and Inland Fisheries |
| Global Land Cover Facility | The GLCF is a center for land cover science with a focus on research using remotely sensed satellite data and products to assess land cover change for local to global systems. |
| Global Mapping Project | The International Steering Committee for Global Mapping's Global Mapping Project provides free geospatial data for "themes" such as boundaries (national and subnational), land cover/use, and vegetation. |
| Gridded Population of the World | Downloadable data depicting the distribution of human population across the globe |
| GTOPO | Digital Elevation Model dataset in 30 arc seconds |
| Harvard Geospatial Library | A collection of worldwide and regional geographic data layers, scanned historic maps, and associated descriptive information |
| Integrated Public Use Microdata Series (IPUMS International) | A project that collects and distributes census data from around the world |
| International Livestock Research Institute | A collection of spatial data layers directly and indirectly related to livestock |
| International Steering Committee for Global Mapping | Data downloads for countries around the globe |
| Journal of Maps | An online journal that aims to provide a forum for researchers to publish maps and spatial diagrams |
| LexisNexis Statistical | Geographic/Demographic/Economic |
| Malaria Atlas Project | Models the spatial limits of Plasmodium falciparum and P. vivax malaria at a global scale and its endemicity within this range |
| NASA MODIS | MODIS Rapid Response System - imagery |
| National Atlas | This site contains numerous downloadable maps of socio-demographic, environmental, social, and political interest, in a variety of formats. |
| National Center for Health Statistics | Provides GIS link data based on the National Center for Health Statistics |
| National Geographic Map Machine | Site with various dynamic maps from numerous sources |
| NOAA Coastal Services Center | Lidar Data Handler available, an ArcView or ArcMap extension designed to help the coastal resource management community manipulate its Light Detection and Ranging (LIDAR) data within a GIS |
| NOAA Environmental Services Data Directory | This site is a portal that leads to numerous resources, focus on oceanic and atmospheric data |
| PovertyMap | World poverty maps, includes data on poverty and environmental factors |
| ReliefWeb Map Centre | International Crisis and Conflicts |
| Second Administrative Level Boundaries (SALB) Dataset | Hosted by the World Health Organization, the SALB Dataset contains geospatial data for subnational boundaries in different countries. Downloads are available in both ArcView .shp format and ArcInfo .e00format |
| Shuttle Radar Topography Mission | NASA data |
| Smithsonian National Zoological Park Conservation GIS | GIS conservation projects |
| Soil Survey Geographic (SSURGO) | Soil surveys |
| Space, Representation, and Use | Maps and data on Mediterranean countries |
| The Gateway to Astronaut Photography of Earth | The Gateway to Astronaut Photography of Earth hosts the best and most complete online collection of astronaut photographs of the Earth from 1961 through the present |
| The International Arctic Environment Data Directory | Data resource for international coverage of the Arctic Ice. Includes hydro, snow and ice, and atmospheric data |
| UNC Libraries GIS DataFinder | A tool to finding spatial data |
| United Nations Development Program: Human Development Report | Each year the Human Development Report (HDR) presents a wealth of statistical information on different aspects of human development |
| USGS Global Geographic Information Systems | Agreement between the USGS and American Geological Institute (AGI) makes the USGS Global GIS database readily available in the form of a DVD based world atlas |
| USGS GloVis | USGS Global Visualization Viewer |
| USGS Shuttle Radar Topography Mission | Topographic data for 80% of the Earth's land surface with data points located every 1-arc second |
| USGS TerraLook | Satellite imagery, allows users to create their own georeferenced JPEG satellite images |
| World Health Organization | Mapping and GIS Map Library |
| World Wind Wiki | Sites offering free orthoimagery of various locations. Note that most do not offer the imagery up via WMS and is thus not easy (as yet) to incorporate into World Wind. |
| Earth System Atlas Data Download Page | Data including countries, rivers, elevation, temperature, precipitation, and net primary productivity |
| National Geospatial-Intelligence Agency (NGA) GEOnet Names Server (GNS) | Geographic names for Geopolitical Areas |
| Greenpeace Italy, World Forests Landscapes | Intact forest landscapes in kmz format |
| Greenpeace Italy, World Forests Landscapes | Intact forest landscapes in shapefile format |
| Grid-Adrenal: Online GIS and Maps Database | GIS data available by theme as well as an interactive map collection |
