Yerevan, sometimes spelled Erevan, is the capital and largest city of Armenia and one of the world's oldest continuously inhabited cities. Situated along the Hrazdan River, Yerevan is the administrative, cultural, and industrial center of the country. It has been the capital since 1918, the fourteenth in the history of Armenia and the seventh located in or around the Ararat plain. The city also serves as the seat of the Araratian Pontifical Diocese; the largest diocese of the Armenian Apostolic Church and one of the oldest dioceses in the world.

The history of Yerevan dates back to the 8th century BC, with the founding of the fortress of Erebuni in 782 BC by King Argishti I at the western extreme of the Ararat plain. Erebuni was "designed as a great administrative and religious centre, a fully royal capital." By the late ancient Armenian Kingdom, new capital cities were established and Yerevan declined in importance. Under Iranian and Russian rule, it was the center of the Erivan Khanate from 1736 to 1828 and the Erivan Governorate from 1850 to 1917, respectively. After World War I, Yerevan became the capital of the First Republic of Armenia as thousands of survivors of the Armenian Genocide in the Ottoman Empire arrived in the area. The city expanded rapidly during the 20th century as Armenia became part of the Soviet Union. In a few decades, Yerevan was transformed from a provincial town within the Russian Empire to Armenia's principal cultural, artistic, and industrial center, as well as becoming the seat of national government.

With the growth of the Armenian economy, Yerevan has undergone major transformation. Much construction has been done throughout the city since the early 2000s, and retail outlets such as restaurants, shops, and street cafés, which were rare during Soviet times, have multiplied. As of 2011, the population of Yerevan was 1,060,138, just over 35% of Armenia's total population. According to the official estimate of 2016, the current population of the city is 1,073,700. Yerevan was named the 2012 World Book Capital by UNESCO. Yerevan is an associate member of Eurocities.

Of the notable landmarks of Yerevan, Erebuni Fortress is considered to be the birthplace of the city, the Katoghike Tsiranavor church is the oldest surviving church of Yerevan and Saint Gregory Cathedral is the largest Armenian cathedral in the world, Tsitsernakaberd is the official memorial to the victims of the Armenian Genocide, and several opera houses, theatres, museums, libraries, and other cultural institutions. Yerevan Opera Theatre is the main spectacle hall of the Armenian capital, the National Gallery of Armenia is the largest art museum in Armenia and shares a building with the History Museum of Armenia, and the Matenadaran repository contains one of the largest depositories of ancient books and manuscripts in the world.

Tourism in Armenia is developing year by year and the capital city of Yerevan is one of the major tourist destinations. The city has a majority of luxury hotels, modern restaurants, bars, pubs and nightclubs. Zvartnots airport has also conducted renovation projects with the growing number of tourists visiting the country. Numerous places in Yerevan are attractive for tourists, such as the dancing fountains of the Republic Square, the State Opera House, the Cascade complex, the ruins of the Urartian city of Erebuni (Arin Berd), the historical site of Karmir Blur (Teishebaini), etc. The largest hotel of the city is the Ani Plaza Hotel. The Armenia Marriott Hotel is located at the Republic Square at the centre of Yerevan, while the Radisson Blu Hotel is located near the Victory Park. Other major chains operating in central Yerevan include the Grand Hotel Yerevan of the Small Luxury Hotels of the World, the Best Western Congress Hotel, the DoubleTree by Hilton, the Hyatt Place, the Ibis Yerevan Center, and The Alexander, a Luxury Collection Hotel of Marriott International.

The location of Yerevan itself, is an inspiring factor for the foreigners to visit the city in order to enjoy the view of the biblical mount of Ararat, as the city lies on the feet of the mountain forming the shape of a Roman amphitheatre.

There are many historical sites, churches and citadels in areas and regions surrounding the city of Yerevan, such as Garni Temple, Zvartnots Cathedral, the monasteries of Khor Virap and Geghard, etc.

Being among the top 10 safest cities in the world, Yerevan has an extensive nightlife scene with a variety of nightclubs, live venues, pedestrian zones, street cafés, jazz cafés, tea houses, casinos, pubs, karaoke clubs and restaurants. Casino Shangri La and Pharaon Complex are among the largest leisure and entertainment centres of the city.

Many world-famous music stars, Russian music celebrities, as well as Armenian singers from diaspora, occasionally perform in concerts in Yerevan.

The Yerevan Zoo founded in 1940, the Yerevan Circus opened in 1956, and the Yerevan Water World opened in 2001, are among the popular entertaining centres in the city.

The Northern Avenue that connects the Opera House with Abovyan street is a popular pedestrian zone in Yerevan with modern residential buildings, business centres, restaurants, bars and cafés. Another popular landmarks is the Yerevan Cascade and the "Cafesjian Sculpture Garden" on Tamanyan Street with its pedestrian zone, featuring many coffee shops, bars, restaurants, and pubs at the sidewalks. The "Cafesjian Center for the Arts" regularly organizes art events throughout the year, including classical music series, traditional folk dance events, and live concerts of jazz, pop and rock music.

As of 2017, Yerevan has three shopping malls: Dalma Garden Mall opened in October 2012, followed by Yerevan Mall in February 2014, and Rossia Mall in March 2016.

International study conducted by Mercer and published in 2019 identified Yerevan to offer higher quality of living, than other capital cities of Transcaucasia.