https://www.geoportal.org/

https://developers.google.com/earth-engine/

A range of Earth Observation-derived data for India including NDVI, ocean temperature and CartoDEM (a DEM for the whole of India at 30m resolution)

https://bhuvan-app3.nrsc.gov.in/data/download/index.php

Get access to an expansive library of geospatial data for risk assessment, early warning, response, and other disaster management needs. Hosted by PDC and compiled by the Global Hazards Information Network, you can search and discover where to access the following resources.

https://www.pdc.org/apps/

https://resourcewatch.org/

http://www.naturalearthdata.com/

A set of consistent GIS layers covering the whole globe at 1km resolution including: transportation, elevation, drainage, vegetation, administrative boundaries, land cover, land use and population centres. Produced by the International Steering Committee on Global Mapping.

https://globalmaps.github.io/

A collection of data collected from a number of the sources below - includes administrative areas, inland water, roads and railways, elevation, land cover, population and climate. Probably the easiest place to get a simple set of data for a specific country.

http://www.diva-gis.org/gdata

https://www.eea.europa.eu/data-and-maps

http://www.fao.org/geonetwork/srv/en/main.home

https://cgiarcsi.community/category/data/

https://sedac.ciesin.columbia.edu/

https://nelson.wisc.edu/sage/data-and-models/datasets.php

A wide range of data from the United Nations Environment Programme including Nighttime Lights, Pollutant Emissions, Commercial Shipping Activity, Protected Areas and Administrative Boundaries. To get data, choose Advanced Search and select Geospatial Data Sets from the top drop-down link

https://datacore.unepgrid.ch/geonetwork/srv/eng/catalog.search;jsessionid=3FD1A35F6A0389D6E61AD45A13DC4483#/home

http://geodata.grid.unep.ch/

The updated version of the ESPON Data Navigator aims at providing an easy access to regional statistical data sources to scientists, policy makers at European, national, regional or local level, statistical offices and the general public.

https://www.espon.eu/tools-maps/espon-data-navigator

A huge set of Antarctic datasets, including basemaps, elevation, satellite imagery, glaciology and geophysical data. Provided in a 7Gb package with QGIS, all set up for viewing, or available through FTP for individual datasets

http://quantarctica.npolar.no/downloads/

Scanned topographic maps, LiDAR-derived DEMs at approx 5m resolution and some aerial photography. Click the links on the left to select different datasets

https://usgs.libguides.com/antarcticresearch

https://www.ga.gov.au/data-pubs

https://data.gov.au/data/dataset

https://www.ibge.gov.br/en/home-eng.html#REC_NAT

http://www.geogratis.gc.ca/

https://open.canada.ca/en/open-data

https://www.bcn.cl/siit/mapas_vectoriales

https://sedac.ciesin.columbia.edu/data/collection/cddc/sets/browse

https://sites.fas.harvard.edu/~chgis/data/chgis/v4/

https://www.kortforsyningen.dk/

A wide range of data including general topographic maps (1:1,000,000 and 1:4,500,000), administrative divisions, elevations and place names and orthophotos for Finland.

https://www.maanmittauslaitos.fi/en/maps-and-spatial-data

https://en.ilmatieteenlaitos.fi/open-data-manual

http://professionnels.ign.fr/donnees

https://en.ni.is/research/geoinformation/metadata-and-downloads

https://atlas.lmi.is/LmiData/index.php?id=61063593914368

Links to a wide range of Italian GIS datasets including DEMs, administrative boundaries, bathymetry, transport networks and more

http://www.mondogis.com/geodati.html

The Kenyan governmental open data site, with a range of data covering the areas of education, poverty, employment agriculture, justice and more

https://www.opendata.go.ke/

Freely available data for Namibia in categories of Climate, Physical Geography, Living-resources, Land and History and People, Services and Infrastructure.

http://www.uni-koeln.de/sfb389/e/e1/download/atlas_namibia/e1_download_people_services_e.htm

Open data from the Norwegian Mapping Agency, including topographical maps, road networks, elevation data, place names and more.

https://www.kartverket.no/en/data/Open-and-Free-geospatial-data-from-Norway/

https://www.philgis.org/gis-data

https://webarchive.iiasa.ac.at/Research/FOR/russia_cd/download.htm#download

http://gis.arso.gov.si/geoportal/catalog/main/home.page

http://nfp-si.eionet.europa.eu/Podatki_in_informacije/F1084793652

ector data focussing on water resources (lakes, reservoirs, rivers, watersheds, wetlands, environmental protection areas, polluants etc) but also including regions, populated places etc.

https://www.miteco.gob.es/es/cartografia-y-sig/ide/descargas/default.aspx#

http://centrodedescargas.cnig.es/CentroDescargas/index.jsp

http://www.juntadeandalucia.es/medioambiente/site/rediam/menuitem.aedc2250f6db83cf8ca78ca731525ea0/?vgnextoid=7b3ba7215670f210VgnVCM1000001325e50aRCRD&lr=lang_es

Data from the Swiss National Mapping Agency including boundaries, 1:1 million vector maps, Landsat images, geological maps and a map of Switzerland during the last glacial maximum.

https://www.swisstopo.admin.ch/fr/home.html

any Ordnance Survey mapping products available in both vector and raster formats. Resolutions from 1:250k to 1:10k as well as detailed gazateers, boundary datasets and post-code point locations. Now also includes topologically correct road and river networks, and more detailed topographic map data

https://www.ordnancesurvey.co.uk/opendatadownload/products.html

huge amounts of data, a fair proportion of which is georeferenced. Useful datasets include snapshots of public transport journeys and lists of public transport stops.

wide range of datasets for the UK including boundaries, pipelines, urban areas, health and safety and more. Many entries in the database are links to other sites and some require registration.

https://magic.defra.gov.uk/home.htm

Downloadable data from the Office for National Statistics, including census data, administrative boundaries, postcode locations etc.

https://geoportal.statistics.gov.uk/

United Arab Emirates

https://enviroportal.ead.ae/geoportal/catalog/search/browse/browse.page

https://www.usgs.gov/core-science-systems/national-geospatial-program/national-map

List of all free data from the NGDC - sorted alphabetically not by category, but includes elevation models, land cover, seismology and more

https://www.ngdc.noaa.gov/nndc/struts/results?op_2=ne&v_2=STORE&t=102759&s=15&d=10,15,11

Environmental data for the whole of the North American continent, including land cover, pollution, climate, ecosystems, human influence and protected species, in raster and vector formats.

https://data.oecd.org/environment.htm

https://www.usgs.gov/centers/fbgc/data-tools

http://datatopics.worldbank.org/esg/index.html

http://aws.amazon.com/datasets/Geographic?browse=1

Mostly US but also links to some international data and services; see also their Tropical Hazard Center http://maps.redcross.org/website/Tropical/ARC_Tropical_Links.html

http://maps.redcross.org/website/Services/ARC_Services.html

http://www.arcgis.com/home/

http://www.agc.army.mil/Home/LearnAboutAGC.aspx

Github account. A collection of awesome world (countries, cities, codes, latitude/longitude, flags, languages, etc.) datasets; tabular data package

https://github.com/planetopendata/awesome-world

Mostly US but also UofMichigans China data and ESRI International Data including WWF Maritime areas and Territories, generalized admin0 boundaries, regions, and more.

http://www.baruch.cuny.edu/geoportal/data/

Human and physical geography data. Branner Earth Sciences Library and the Stanford Geospatial Center host a comprehensive set of base and thematic spatial data as well as a large collection of static maps.

https://library.stanford.edu/research/stanford-geospatial-center/data

Mostly earth sicience data but has list of portals classified by host agency type with links to other datasets (see http://idn.ceos.org/portals/Keywords.do?Portal=idn_ceos&KeywordPath=DataCenters&MetadataType=0&lbnode=mdlb1)

http://gisweb.ciat.cgiar.org:8080/geonetwork/srv/eng/catalog.search#/home

https://emergency.copernicus.eu/mapping/copernicus-emergency-management-service#zoom=2&lat=37.17407&lon=69.65&layers=T00000B0

sample admin boundary search: https://data.world/search?q=administrative+boundary; can also use predefined tags like: https://data.world/datasets/populated-places

https://data.world/search?q=

http://www.esri.com/services/disaster-response/index.html

Open data federation via OpenSearch and Atom. Download in KML, CSV, Atom, SQLite, Shapefile, PNG, PDF. GeoIQ Appliance and VM for local or offline support.

https://geodata.lib.berkeley.edu/

Includes documents, tooos and services in addition to data links - choose type to sort by resource type. Queries like "http://geolode.org/preview/?q=elevation" will return multiple resource types associated with elevation.

http://geolode.org/preview/

Index (footprints) of scanned copies of paper, toposheets from different institutions at scales from 1:50,000 to 1:125,000, with links to the sheets housed at home institutions; link is web services; also available through clearinghouse here: http://csmgis.maps.arcgis.com/apps/PublicGallery/index.html?appid=044815b03f4c4e86bfb9f0d7ca0de44a&group=427f021a56f9449dbba24fbb4b915f55

http://tinyurl.com/ksnep8e (or http://csmgis.maps.arcgis.com/apps/OnePane/basicviewer/index.html?appid=a78c3bcfabe1497dba55185fb517f5ca)

http://gcmd.gsfc.nasa.gov/

http://petercon.freeshell.org/imw/

https://wad.jrc.ec.europa.eu/geoportal

Integrates world population and environmental data: Population censuses and surveys; Land cover data, Temperature, precipitation, and related climate data, Land use data derived from censuses and surveys in combination with remotely sensed data

https://geodata.lib.utexas.edu/catalog/facet/dc_subject_sm

regularly-updated, complete copies of the OpenStreetMap.org database; see also http://metro.teczno.com/ for extracts for large cities orhttp://download.geofabrik.de/osm for other subsets

http://planet.openstreetmap.org/

http://research.un.org/en/maps/

http://www.un-spider.org/links-and-resources/data-sources

http://na.unep.net/siouxfalls/datasets/datalist.php

Mostly environmental focused but also transport, boundary and other humanitarian response datasets.See all data set boundaries classified by data theme at http://landscapeportal.org/maps/614/view

http://landscapeportal.org/

The collection focuses on the Puget Sound and State of Washington areas, but there is also national and international datasets

https://guides.lib.uw.edu/friendly.php?s=research/gis

Earthworks is Stanford University Library's portal for discovery and distribution of geospatial data. Earthworks provides federated search of more than a dozen other research collections and direct access to data for download. Earthworks currently contains records for over 72,000 spatial datasets and cartographic resources, with over 58,000 of those freely available under permissive licensing

https://earthworks.stanford.edu/

https://environmentlive.unep.org/global/data/GL#charts|929