Doha (الدوحة‎), or ad-Dōḥa, is the capital and most populous city of the State of Qatar. It has a population of 1,850,000. The city is located on the coast of the Persian Gulf in the east of the country. It is Qatar's fastest growing city, with over 80% of the nation's population living in Doha or its surrounding suburbs, and it is also the economic centre of the country.

Doha was founded in the 1820s as an offshoot of Al Bidda. It was officially declared as the country's capital in 1971, when Qatar gained independence from being a British Protectorate. It is the commercial capital of Qatar and one of the emergent financial centres in the Middle East.

It was also selected as host city of a number of sporting events, including the 2006 Asian Games, the 2011 Pan Arab Games and most of the games at the 2011 AFC Asian Cup.

In December 2011, the World Petroleum Council held the 20th World Petroleum Conference in Doha. Additionally, the city hosted the 2012 UNFCCC Climate Negotiations and is set to host many of the venues for the 2022 FIFA World Cup.The city has also hosted the 140th Inter-Parliamentary Union Assembly in April 2019.

The population of Doha is overwhelmingly composed of expatriates, with Qatari nationals forming a minority. The largest portion of expatriates in Qatar are from South-East and South Asian countries, mainly India, Pakistan, Sri Lanka, Nepal, Philippines, and Bangladesh with large numbers of expatriates also coming from the Levant Arab countries, North Africa, and East Asia. Doha is also home to many expatriates from Europe, North America, South Africa and Australia.

Arabic is the official language of Qatar. English is commonly used as a second language, and a rising lingua franca, especially in commerce.
As there is a large expatriate population in Doha, languages such as Malayalam, Tamil, Bengali, Tagalog, Spanish, French, Urdu and Hindi are widely spoken.