Bosnia and Herzegovina, abbreviated BiH or B&H, sometimes called Bosnia–Herzegovina and often known informally as Bosnia, is a country at the crossroads of south and southeast Europe, located in the Balkans. Bosnia and Herzegovina borders Serbia to the east, Montenegro to the southeast, and Croatia to the north and southwest. In the south it has a narrow coast on the Adriatic Sea within the Mediterranean, which is about 20 kilometres (12 miles) long and surrounds the town of Neum. Bosnia, which is the inland region of the country, has a moderate continental climate with hot summers and cold, snowy winters. In the central and eastern regions of the country, the geography is mountainous, in the northwest it is moderately hilly, and in the northeast it is predominantly flat. Herzegovina, which is the smaller, southern region of the country, has a Mediterranean climate and is mostly mountainous. Sarajevo is the capital and the largest city of the country followed by Banja Luka, Tuzla and Zenica.

Today, the country is home to three main ethnic groups, designated "constituent peoples" in the country's constitution. The Bosniaks are the largest group of the three, the Serbs are the second-largest, and the Croats are the third-largest. In English, all natives of Bosnia and Herzegovina, regardless of ethnicity, are called Bosnian. Minorities, who under the constitution are categorized as "others", include Jews, Roma, Albanians, Montenegrins, Ukrainians and Turks.

Bosnia and Herzegovina has a bicameral legislature and a three-member presidency made up of one member from each of the three major ethnic groups. However, the central government's power is highly limited, as the country is largely decentralized. It comprises two autonomous entities—the Federation of Bosnia and Herzegovina and Republika Srpska—and a third unit, the Brčko District, which is governed by its own local government. The Federation of Bosnia and Herzegovina furthermore consists of 10 cantons.

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