Iasi, also referred to as Jassy, is the second largest city in Romania and the seat of Iasi County. Located in the historical region of Moldavia, Iasi has traditionally been one of the leading centres of Romanian social, cultural, academic and artistic life. The city was the capital of the Principality of Moldavia from 1564 to 1859, then of the United Principalities from 1859 to 1862, and the capital of Romania from 1916 to 1918.

Known as The Cultural Capital of Romania, Iasi is a symbol in Romanian history. The historian Nicolae Iorga said "There should be no Romanian who does not know of it". Still referred to as The Moldavian Capital, Iasi is the main economic and business centre of the Moldavian region of Romania.s In December 2018, Iasi was officially declared Historical capital of Romania.

At the 2011 census, the city proper had a population of 290,422 (making it the fourth most populous in Romania at the time). With 500,668 residents (as of 2018), the Iasi urban area is the second most populous in Romania (after Bucharest), whereas more than 500,000 people live within its peri-urban area.

Home to the oldest Romanian university and to the first engineering school, Iasi is one of the most important education and research centres of the country, and accommodates over 60,000 students in 5 public universities. The social and cultural life revolves around the Vasile Alecsandri National Theater (the oldest in Romania), the Moldova State Philharmonic, the Opera House, the Iasi Athenaeum, a famous Botanical Garden (the oldest and largest in Romania), the Central University Library (the oldest in Romania), the high quality cultural centres and festivals, an array of museums, memorial houses, religious and historical monuments. The city is also known as the site of the largest Romanian pilgrimage which takes place each year, in October.