Austria, officially the Republic of Austria (German: Republik Österreich, listen (help·info)), is a land-locked country in Central Europe composed of nine federated states (Bundesländer), one of which is Vienna, Austria's capital and its largest city. Austria occupies an area of 83,879 km2 (32,386 sq mi) and has a population of nearly 9 million people. It is bordered by Germany and the Czech Republic to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the west. While German is the country's official language, many Austrians communicate informally in a variety of Bavarian dialects.

Austria initially emerged as a margraviate around 976 and developed into a duchy and archduchy. In the 16th century, Austria started serving as the heart of the Habsburg Monarchy and the junior branch of the House of Habsburg – one of the most influential royal dynasties in history. As an archduchy, it was a major component and administrative centre of the Holy Roman Empire. Following the Holy Roman Empire's dissolution, Austria established its own empire in the 19th century, which became a great power and the leading force of the German Confederation. After its abolishment, the Austrian Empire pursued its own course independent of the affairs of other German States. Following the Austro-Prussian War and the compromise with Hungary, the Dual Monarchy was established.

Austria was involved in World War I under Emperor Franz Joseph following the assassination of Archduke Ferdinand, the presumptive successor to the Austro-Hungarian throne. Austria was also the birthplace of Adolf Hitler, who became the Chancellor of the German Reich. Prior to the invasion of Poland in 1939, Germany previously annexed Austria by the Anschluss and seized the Sudetenland under terms outlined by the Munich Agreement. Following the defeat of Nazi Germany and an extended period of Allied occupation, Austria was reestablished as a sovereign and self-governing democratic nation known as the Second Republic.

Austria is a parliamentary representative democracy with a directly elected Federal President as head of state and a Chancellor as head of the federal government. Major urban areas of Austria include Graz, Linz, Salzburg and Innsbruck. Austria is consistently ranked in the top 20 richest countries in the world by GDP per capita terms. The country has achieved a high standard of living and in 2018 was ranked 20th in the world for its Human Development Index. Vienna consistently ranks in the top internationally on quality-of-life indicators.

The Second Republic declared its perpetual neutrality in foreign political affairs in 1955. Austria has been a member of the United Nations since 1955 and joined the European Union in 1995. It plays host to the OSCE and OPEC and is a founding member of the OECD and Interpol. Austria also signed the Schengen Agreement in 1995, and adopted the euro currency in 1999.