The terms Baltic Sea Region, Baltic Rim countries (or simply Baltic Rim), and the Baltic Sea countries/states refer to slightly different combinations of countries in the general area surrounding the Baltic Sea in Northeastern Europe.
Depending on the context the Baltic Sea Region might stand for:
- The countries that have shorelines along the Baltic Sea: Denmark, Estonia, Latvia, Finland, Germany, Lithuania, Poland, Russia, and Sweden.
- The group of countries that are members of the inter-governmental Baltic Assembly and Baltic Council of Ministers, and generally referred to by the shorthand, Baltic states: Estonia, Latvia, and Lithuania.
- Estonia, Latvia, Lithuania and Kaliningrad Oblast of Russia, exclaved from the remainder of Russia. 
- Historic East Prussia and the historical lands of Livonia, Courland and Estonia (Swedish Estonia and Russian Estonia).
- The former Baltic governorates of Imperial Russia: Today's Estonia and Latvia (excluding parts of modern Eastern Latvia that were part of Vitebsk Governorate).
- The countries on the historical British trade route through the Baltic Sea, i.e. including the Scandinavian Peninsula (Sweden and Norway).
- The Council of the Baltic Sea States, comprised[a] by the countries with shorelines along the Baltic Sea, in addition to Norway, Iceland and the European Commission.
- The islands of the Euroregion B7 Baltic Islands Network, which includes the islands and archipelagos Åland (autonomous), Bornholm (Denmark), Gotland (Sweden), Hiiumaa (Estonia), Öland (Sweden), Rügen (Germany), and Saaremaa (Estonia).
- On historic Scandinavian and German maps, the Balticum sometimes includes only the historically or culturally German-dominated lands, or provinces, of Estonia, Livonia, Courland and Latgale (corresponding to modern Estonia and Latvia), as well as sometimes Pomerania, Kashubia and East Prussia, while the historically less-Germanized Lithuania is occasionally excluded.
- In geology, the Baltic Shield includes Fennoscandia, parts of northwestern Russia and the northern Baltic Sea.
- State members of CBSS: Denmark, Estonia, Finland, Germany, Iceland, Latvia, Lithuania, Norway, Poland, Russia and Sweden.
- Postimees: "Medical scientist proves hypothesis set by Lennart Meri".
- Republic of Estonia; Republic of Latvia; Republic of Lithuania (1994). Declaration on Unity and Co-operation by the Republic of Estonia, Republic of Latvia and Republic of Lithuania (PDF). Council of Baltic States. Archived from the original (PDF) on 7 May 2019. Retrieved 2 June 2021.
- Misiunas, Romuald J; Bater, James H (25 May 2006). "Baltic states". Encyclopedia Britannica (Online ed.). Retrieved 2 June 2021.
- Ministry for Foreign Affairs of the Republic of Latvia. "Co-operation among the Baltic States". Republic of Latvia. Archived from the original on 4 September 2008. Retrieved 2 June 2021.
- Republic of Estonia. "Baltic Cooperation". Ministry of Foreign Affairs. Archived from the original on 6 May 2017. Retrieved 28 May 2018.
- «The Baltic region includes the Baltic republics and the Kaliningrad region of the RSFSR "» — Baltic region in the Great Soviet Encyclopedia, 1969–1978 (in Russian)
- European Commission. "CBSS - Council of Baltic Sea States". knowledge4policy.ec.europa.eu. European Union. Retrieved 2 June 2021.
The Council of the Baltic Sea States is an overall political forum for regional inter-governmental cooperation. The Members of the Council are the eleven states of the Baltic Sea Region as well as the European Commission.
- Council of the Baltic Sea States. "CBSS - About Us".
- Norbert Götz. "Spatial Politics and Fuzzy Regionalism: The Case of the Baltic Sea Area." Baltic Worlds 9 (2016) 3: 54–67.
|Wikimedia Commons has media related to Baltic region.|
- Council of the Baltic Sea States official website
- The Baltic Sea Information Centre
- EU Baltic Sea Region Strategy (EUSBSR) - a strategy aiming to accelerate the integration of the region
- The Baltic University Programme - a University network focused on a sustainable development in the Baltic Sea region.
- Baltic Sea Region Spatial Planning Initiative VASAB
- Baltic Sea Region Programme 2007-2013
- Vifanord – a digital library that provides scientific information on the Nordic and Baltic countries as well as the Baltic region as a whole.