Mordor, also known as Mordor on Domaniewska Street,[a] is an informal name for the area, mostly composed of office buildings, in the city of Warsaw, Poland, located within the neighbourhoods of Służewiec (Służewiec Przemysłowy) and western Ksawerów in the district of Mokotów.

[6] The huge number of people commuting to and from the area every day, together with local road systems not designed for such a number of vehicles, is causing the area to be regularly sight of massive traffic congestion, as well as lack of parking spaces.

Many candidates cite difficulties in commuting, as the main reason for turning down offers to work in the area.

[11][12] In the 1990s, the manufacturing industry ceased to exist in the area of Służewiec and the nearby western part of Ksawerów.

It then contributed to the development of the business industry in the area, and eventually leading to the creation of the biggest complex of office buildings in Poland One of the first new infestations in the area was the construction of Curtis Plaza office building in 1992, located at 18 Wołoska Street.

[9] Due to increased industrial development leading to chronic traffic congestion, the area began being informally referred to as Mordor.

In 2015, its supporters hung a street sign with name Mordor in the area, which however quickly taken down by the authorities.