Sector 1 is an administrative unit of Bucharest located in the northern part of the city. It contains also the northwestern districts of Băneasa and Pipera. Sector 1 is thought to be the wealthiest sector in Bucharest.
Blue Air,JeTran Air,Petrom and Medallion Air have their head offices in Sector 1.
The mayor of the sector is Andrei Ioan Chiliman, from the National Liberal Party. The Local Council of Sector 1 has 27 seats, with the following party composition (as of 2008):