Geographic Names Information System (GNIS) - GNIS contains entries for almost 2,000,000 geographic features in the United States. Each entry includes information about Federally recognized names for features in the United States, including the State, county, and geographic coordinates. Produced by the US Board of Geographic Names and the US Geological Survey.

US Gazetteer - The US Gazetteer is a list of United States place names that were included in the 1990 census. Since it was derived from census data, this database only contains names for populated places.

National Association of Counties (NACo) - NACo provides a database of county information, searchable by city or state.

• Georgia Place Names - A site containing place names of settlements, most with linked maps.
• Kentucky Place Names - Alphabetical list of community names that eventually became the book Kentucky Place Names.
• Minnesota Place Names - A guide to historical Minnesota place names sponsored by the Minnesota Historical Society.
• Tennessee Place Names and Post Offices - A guide to historical place names in Tennessee

• NGA GEOnet Names Server (GNS) - GEOnet Names Server (GNS) is the official repository of standard spellings of all foreign geographic names, sanctioned by the United States Board on Geographic Names (US BGN).
• Getty Thesaurus of Geographic Names - The Getty Thesaurus of Geographic Names (TGN) provides information on place names related to art, art history and related subjects, such as history archeology, and geography.
• JewishGen  - A searchable database that provides information on the location of populated places in Eastern Europe, many of which no longer exist.

• Antarctica
  • Composite Gazetteer of Antarctica - An inernational gazetteer from the Scientific Committee on Antarctic Research (SCAR).
  • Antarctic Geographic Place Names - Search for Antarctic Place Names approved by the US Board on Geographic Names.
  • Australian Antarctic Gazetteer - Search for place names in the Australian Antarctic and Sub-Antarctic Territory.
  • Index of German-Language Antarctic Place Names - A list of German Antarctic Place Names and their latitude and longitude.
• Australia
  • Gazetteer of Australian Place Names - The Australian Geographic Place Names site from the Australian Government.
  • Australian Capital Territory - Public places in Canberra, Australia's capital.
  • New South Wales - Place Name site from New South Wales Land and Property Information.
  • Northern Territory - Place Names in the Northern Territory Government's Place Name Committee.
  • South Australia - Place Names Online South Australian State Gazetteer.
  • Victoria - Signpost, the Place Names in Victoria web site.
  • Western Australia - Place name guide from the State Library of Western Australia.
• Belgium
• Place Names in Belgium - An alphabetical list of cities, towns and hamlets in Belgium. This site gives the postal code and province for cities, towns and villages in Belgium.
• Canada
  • Canadian Geographical Names / Les noms géographiques du Canada - The Canadian Geographical Names site, produced by Natural Resources Canada, provides access to a searchable database containing over 500,000 place names in Canada. Information on the origins of some Canadian place names can be found at the Geographical Names Origins site.
  • British Columbia Place Names - Search for place names in British Columbia. Provides location and topographic map sheet showing the place or feature. Also has an option to do "sounds like" searches. In some cases, the place may be displayed on a digital map.
    
  • Quebec - Commission de toponymie du Québec (French Only).  Includes aboriginal and municipal place names.
  • Northwest Territories Place Names - Search for place names in the Northwest Territories. Provides location and topographic map sheet showing the place or feature. A map showing the feature's location can also be displayed.
• Place Names in Denmark - This site contains alphabetical lists of authorized place names in Denmark. Each list contains information on place names the parish and the administrative district. In Danish.
• Place Names Database of Estonia - Since it declared its independence in 1991, Estonia has renamed a number of places. This site is a searchable database that contains current names for places in Estonia as well as variant names.
• Finland - The National Land Survey of Finland's MapSite. Registration required.
• France
• Place Names Search - The searchable database of over 2,000,000 French place names from the Institut Géographique National.
• Germany
  • Atlas des Deutschen Reichs / Atlas of the German Empire - Scanned images of the maps and gazetteer of this 1883 atlas by Ludwig Ravenstein are provided by the University of Wisconsin. It covers Germany as well as neiboring countries.
  • Horlacher Genealogy Site - This genealogy site includes links to several gazetteers.
• Great Britain
  • Landranger Map Place Names Search - This site allows users to search for place names appearing on the Landranger maps. For each place name searched, this system provides information on the Landranger map number that contains the place, the type of feature and its latitude and longitude.
  • Get a Map - The Ordnance Survey's Get a Map system.
  • Multimap.com Interactive Atlas - A site that provides detailed maps when a British place name is entered.
  • Great Britain Historical GIS System - List of Gazetteers - A list of gazetteers available online to researchers.
  • GENUCKI Gazetteer and Church Database- A database of over 14000 churches and register offices in the United Kingdom from the UK and Ireland Genealogy Web Site.
• Hungary - An alphabetical list of cities in Hungary with their population.
• Luxembourg - Gazetteer of Villages and Towns - An searchable map of place names in Luxembourgish with their French and German equivalents.
• New Zealand Geographic Place Names Database - A database of over 40,000 place names that appear on current New Zealand topographic maps and some historical maps.
• Project Perseus Atlas - Locate and plot sites related to the Greek world and the Mediterranean region. The atlas has drawings, digital elevation models, satellite images and three-dimensional topographic views.
• Scandinavia - The Nordic Place Names Database, hosted by the National Land Survey of Finland, contains place names for Denmark, Faeroe Islands, Finland, Greenland, Norway and Sweden. Registration required
• Scotland- Two sites are available for Scotland. They are:
  • Gazetteer for Scotland - This site describes itself as a comprehensive geographical database of "towns, villages, bens and glens from the Scottish Borders to the Northern Isles."
  • Corpus of Scottish Meadieval Parish Churches - from the University of St. Andrews.
• Sweden- Two sites are available for Sweden. They are:
  • Swedish Place Names Lexicon - Place name list for Sweden. Each entry identifies the type of place, the parish, jurisdictional district and district. In Swedish.
  • Swedish National Atlas Place Names Register - Enter a place name and the location of the site is shown on a map of Sweden. Also gives area and population statistics.

• Switzerland - SwissGeo is a database that can be used to search for a place by name or address and view the 1:50,000 topographic map showing that place.

Gazetteer of Planetary Nomenclature