Otopeni (Romanian pronunciation: [otoˈpenʲ]) is a town in Ilfov County, Muntenia, Romania, neighbouring the north of Bucharest along the DN1 road to Ploiești.

The head office of the airline TAROM is located inside the International Departures Terminal in the airport.

On the occasion of excavations in 1966 to expand the nearby Henri Coandă International Airport, archaeologist Margaret Constantiniu of the History Museum of Bucharest identified fragments of ancient pottery and other objects that belonged to an important human settlements existing since the first period of the Iron Age.

By charter of 14 February 1587, Mihnea Turcitul – voivode of Wallachia – gave Holy Trinity Monastery half to the village of Islazul and half to the village of Hodopeni (today Otopeni) mills and gypsies.

On 20 May 1620, Maria, great Băneasa, Holy Trinity monastery was given back (later Radu Vodă) half the village Hodopeni with Rumani, given by Master Villa, commanding Ruman listen.