Free Country GIS Sources

State sites Key data General free data

Caveats on these lists.
 
Afghanistan 1:250K geologic maps: http://pubs.usgs.gov/of/afghan/
Arctic/Antarctica

http://usarc.usgs.gov/
Gazetteers: http://data.aad.gov.au/aadc/gaz/scar/ (registration required; may have duplicate entries)
Arctic DEM: 2 m strips (multiple times available for change detection), 5 m mosaics

NGA Arctic: http://nga.maps.arcgis.com/apps/MapSeries/index.html?appid=cf2fba21df7540fb981f8836f2a97e25

Austria http://data.opendataportal.at/dataset
Australia: http://www.ga.gov.au/
Bathymetry: http://www.ga.gov.au/scientific-topics/marine/bathymetry#
Botswana  Geoscience portal: http://geoscienceportal.geosoft.com/Botswana/search?  
Canada:
Denmark Lidar:  http://download.kortforsyningen.dk/ .  You will have to set up an account.  May have to use ftp download from ftp.kortforsyningen.dk, which might have to be from an internet connection that has "reasonable" (not IT paranoid) security settings.
Finland
France
Gabon Forest Atlas: http://gab-data.forest-atlas.org/
Germany
Greenland
Haiti Haiti earthquake, from RIT, with LAS point clouds, DSMs, and DTMs http://waspftp.cis.rit.edu/
Ireland Dublin lidar, 300 points per square meter, https://geo.nyu.edu/catalog/nyu_2451_38684
Iceland
Italy: http://www.pcn.minambiente.it/GN/index.php?lan=en  English option, but not clear on quick visit about how to get data
Luxembourg https://data.public.lu/en/datasets/bd-l-mnt5/
Morocco
Netherlands
New Zealand
Norway Lidar: https://hoydedata.no/  (Switch to English with button on the upper right, next to Log in)
Topo maps, MrSid: https://kartverket.no/Kart/Hele-Norge-rett-i-lomma/
Poland
Polar http://nsidc.org/data/dems/index.html (Greenland and Antarctica)
Slovenia Lildar: http://gis.arso.gov.si/evode/profile.aspx?id=atlas_voda_Lidar@Arso
Spain
Switzerland

Zurich canton lidar

UK
Viet Nam http://www.lib.utexas.edu/maps/topo/vietnam/   GeoPDFs of 1:50K AMS sheets 

Last revision 12/16/2017