Zhytomyr (Ukrainian: Жито́мир pronounced [ʒɪˈtɔmɪr], Russian: Жито́мир, Zhitomir, Polish: Żytomierz, Yiddish: זשיטאָמיר) is a city in the North of the western half of Ukraine. It is the administrative center of the Zhytomyr Oblast (province), as well as the administrative center of the surrounding Zhytomyr Raion (district). Note that the city of Zhytomyr is not a part of the Zhytomyr raion: the city itself is designated as its own separate raion within the oblast; moreover Zhytomyr consists of two so-called "raions in a city": the Bohunskyi raion and the Koroliovskyi raion (named in honour of Sergey Korolyov). Zhytomyr is located at around 50°16′N 28°40′E / 50.267°N 28.667°E / 50.267; 28.667, occupying an area of 65 km² (25 sq mi).

The current estimated population is 277,900 (as of 2005).

Zhytomyr is a major transportation hub. The city lies on a historic route linking the city of Kiev with the west through Brest. Today it links Warsaw with Kiev, Minsk with Izmail, and several major cities of Ukraine. Zhytomyr was also the location of Ozerne, a key Cold War strategic aircraft base located 11 km (6.8 mi) southeast of the city.