The bus service in Prague is provided by several transport operators, chiefly by Dopravní podnik hlavního města Prahy, a.s. (Transport Company of the Capital of Prague, plc.). The base system of metropolitan and suburban transport is Pražská integrovaná doprava (Prague Integrated Transport) organized by Prague municipal organization ROPID but several urban and suburban lines don't belong to it. PID system includes also metro and tram lines, Vltava ferries, a funicular and partly railway transport.

The first buses in Prague were experimentally operated in 1908 in the Malá Strana district, but due to unreliable technology at the time it was declared a failure after 20 months. Regular service was started on 20 June 1925 and is in operation continuously since.

In 1990s and 2000s, metropolitan system was integrated and expanded with suburban transport as Pražská integrovaná doprava (PID, Prague Integrated Transport). Some directions (Kladno) remain not integrated in this system. The buses are fulfilling many different roles in the Prague's public transport. Many lines serve as connections between the metro and housing quarters. There are also plans to gradually introduce trunk services, similar to bus rapid transit systems in Latin America.

Prague ( /ˈprɑːɡ/; Czech: Praha pronounced [ˈpraɦa] ( listen)) is the capital and largest city of the Czech Republic and fourteenth largest city in European Union. Situated in the north-west of the country on the Vltava river, the city is home to about 1.3 million people, while its metropolitan area is estimated to have a population of nearly 2.0 million. The city has a temperate oceanic climate with warm summers and chilly winters.

Prague has been a political, cultural, and economic centre of central Europe with waxing and waning fortunes during its 1,100 year existence. Founded during the Romanesque and flourishing by the Gothic and Renaissance eras, Prague was the seat of two Holy Roman Emperors and thus then also the capital of the Holy Roman Empire. It was an important city to the Habsburg Monarchy and its Austro-Hungarian Empire and after World War I became the capital of Czechoslovakia. The city played major roles in the Protestant Reformation, the Thirty Years' War, and in modern history generally as the principal conurbation in Bohemia and Moravia whose second city is Brno.