This is a list of countries and territories where Russian

Russian language

Russian is a Slavic language used primarily in Russia, Belarus, Uzbekistan, Kazakhstan, Tajikistan and Kyrgyzstan. It is an unofficial but widely spoken language in Ukraine, Moldova, Latvia, Turkmenistan and Estonia and, to a lesser extent, the other countries that were once constituent republics...

 is an official language:

Countries where Russian is an Official Language

(state) (2-nd state) (2-nd official) (2-nd official) (official inter-ethnic communication)

Regions where Russian is an Official Language

 Ukraine:
 Moldova:
 Kingdom of Romania:

• A number of municipalities County Tulcea
  Tulcea
  Tulcea is a city in Dobrogea, Romania. It is the administrative center of Tulcea county, and has a population of 92,379 as of 2007. One village, Tudor Vladimirescu, is administered by the city.- History :...
  
   and Constanta
  Constanta
  Constanța is the oldest extant city in Romania, founded around 600 BC. The city is located in the Dobruja region of Romania, on the Black Sea coast. It is the capital of Constanța County and the largest city in the region....
  
  

 Norway:

• Russian Economic Zone in Spitsbergen
  Spitsbergen
  Spitsbergen is the largest and only permanently populated island of the Svalbard archipelago in Norway. Constituting the western-most bulk of the archipelago, it borders the Arctic Ocean, the Norwegian Sea and the Greenland Sea...
  
  

 United States:

• 
  New York State (election documents)

Organisations which have Russian as an Official Language

• 
  IAEA
  International Atomic Energy Agency
  The International Atomic Energy Agency is an international organization that seeks to promote the peaceful use of nuclear energy, and to inhibit its use for any military purpose, including nuclear weapons. The IAEA was established as an autonomous organization on 29 July 1957...
  
  
  
  
  
• 
  International Civil Aviation Organization
  International Civil Aviation Organization
  The International Civil Aviation Organization , pronounced , , is a specialized agency of the United Nations. It codifies the principles and techniques of international air navigation and fosters the planning and development of international air transport to ensure safe and orderly growth...
  
  
  

 Commonwealth of Independent States

Eurasian Economic Community

Eurasian Economic Community

The Eurasian Economic Community originated from the Commonwealth of Independent States customs union between Belarus, Russia and Kazakhstan on 29 March 1996...

Collective Security Treaty Organisation

Collective Security Treaty Organisation

The Collective Security Treaty Organization is an intergovernmental military alliance which was signed on 15 May 1992. On 7 October 2002, the Presidents of Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia and Tajikistan signed a charter in Tashkent founding the CSTO.Nikolai Bordyuzha was appointed...

Shanghai Cooperation Organisation

Organization for Security and Co-operation in Europe

Organization for Security and Co-operation in Europe

The Organization for Security and Co-operation in Europe is the world's largest security-oriented intergovernmental organization. Its mandate includes issues such as arms control, human rights, freedom of the press and fair elections...

Secretariat of the Antarctic Treaty

Other

In addition to the above mentioned countries in which Russian is an official language, there are several other countries where Russian, though not official, is an important secondary language. These include:

Map of Russian-Language Use