Central Administrative Okrug, or Tsentralny Administrativny Okrug, is one of the twelve administrative okrugs of Moscow, Russia. Population: 772,258 (2021 Census); 741,967 (2010 Russian census); 701,353 (2002 Census);. It is the core of the city that includes its oldest, historical parts: Kremlin and the former Bely Gorod and Zemlyanoy Gorod; with certain churches and fortifications as old as from the 14th to 15th century. It is also the site of Russia's highest government institutions, such as the Government house, the State Duma, the Federation Council, and most ministries. A large part of the territory is occupied by office buildings, especially in the “Moscow-City” business district on the west side of the Okrug.

Moscow is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at over 13 million residents within the city limits, over 18.8 million residents in the urban area, and over 21.5 million residents in its metropolitan area. The city covers an area of 2,511 square kilometers (970 sq mi), while the urban area covers 5,891 square kilometers (2,275 sq mi), and the metropolitan area covers over 26,000 square kilometers (10,000 sq mi). Moscow is among the world's largest cities, being the most populous city in its entirety in Europe, the largest urban and metropolitan area in Europe, and the largest city by land area on the European continent.