Ouagadougou ( /ˌwɑːɡəˈduːɡuː/; Mossi: [ˈwaɡᵊdᵊɡᵊ]) is the capital of Burkina Faso and the administrative, communications, cultural and economic center of the nation. It is also the country's largest city, with a population of 1,475,223 (as of 2006). The city's name is often shortened to Ouaga. The inhabitants are called ouagalais. The spelling of the name Ouagadougou is derived from the French orthography common in former French African colonies. If English orthography were used (as in Ghana or Nigeria), the spelling would be Wagadugu.

Ouagadougou's primary industries are food processing and textiles. It is served by an international airport, rail links to Abidjan in Côte d'Ivoire and to Kaya in the north of Burkina, and a highway to Niamey, Niger. Ouagadougou was the site of Ouagadougou grand market, one of the largest markets in West Africa, which burned in 2003 and remains closed. Other attractions include the National Museum of Burkina Faso, the Moro-Naba Palace (site of the Moro-Naba Ceremony), the National Museum of Music, and several craft markets.