This article is about the concept of geographically close areas. For town governments establishing official links, see Sister city. For the area typically called the "Twin Cities" in the United States, see Minneapolis–Saint Paul. For other uses, see Twin city.
High-rise buildings in Minneapolis's Cedar-Riverside neighborhood, with the Downtown Saint Paul skyline visible in the background ten miles away. Minneapolis' city limits border those of Saint Paul, the capital of Minnesota. This gave birth to the nickname of the region, the "Twin Cities" metropolitan area.A view of the town of Tornio (Finland), which forms a twin city with Haparanda (Sweden)
Twin cities are two neighboring cities or urban areas that are generally comparable in status and size, though not necessarily equal.[1][2] Although there are no formal criteria, a city and a substantially smaller suburb would not typically qualify, even if they were once separate. Tri-cities and quad cities are similar groups of three or four municipalities, respectively.
A common but not universal scenario is two cities that developed concurrently on opposite sides of a river. For example, Minneapolis and Saint Paul in Minnesota—one of the most widely known pairs of "Twin Cities"—were founded several miles apart on opposite sides of the Mississippi River, and competed for prominence as they grew.
Democratic Republic of the Congo / 
Republic of the Congo
Rwanda
Cameroon / 
Chad
Ghana / 
Togo
Zimbabwe / 
Zambia
Azerbaijan / 
Iran
China / 
Mongolia
North Korea
Russia
Vietnam
Malaysia / 
Singapore
Thailand / 
Laos
United Arab Emirates / 
Oman
India / 
Bangladesh
Israel / 
Jordan
Taiwan / 
Hong Kong / 
Brazil / 
Uruguay
Argentina / 
Paraguay
Bolivia
Egypt
Nigeria
South Africa
