Kesklinn (Estonian for 'city centre') is one of the 8 administrative districts (Estonian: linnaosa) of Tallinn, the capital of Estonia. It is situated on the Tallinn Bay and bordered to the northwest by the district of Põhja-Tallinn, to the west by Kristiine, to the southwest by Nõmme, to the east by Lasnamäe and Pirita, and to the south by Rae Parish, beyond Lake Ülemiste. The island of Aegna, located in the Tallinn Bay, also falls within this administrative district. Kesklinn has an area of 30.6 km (11.8 sq mi) and a population of 57,731 (As of 1 November 2014); population density is 1,886.6/km (4,886/sq mi).

It is home to Tallinn's UNESCO-listed Old Town. Here sits the Tallinn Passenger Port and port-related business centres, including a new complex of high-rise buildings on Liivalaia Street, as well as Tartu Road and Maakri Street. Most of the city's public and cultural venues are located in Kesklinn. These include the parliament building (Toompea Castle), City Government, The Estonian National Opera, Estonian and Russian drama theatres, The National Library, Kadrioru and Kalevi stadiums and a considerable number of museums, theatres and government agencies. Real estate costs in the area are the highest in Estonia. While the population of the city and the country as a whole have fallen since independence, the population of Kesklinn has risen. One of the economy's key drivers is tourism from Helsinki, Finland, which is connected to Tallinn by rapid ferry traffic.

Outside old town, there are a number of sights including Kadriorg Palace in Kadriorg, a Baroque building which was built in the 18th century by Peter I of Russia. Here also is the location of the Rotermanni quarter, Tatari, Kassisaba subdistricts. Until April 2007, a bronze Soviet war monument commemorated the occupation of Estonia by the Soviet Union; however this statue was relocated, sparking protests throughout the country's vocal Russian minority and abroad. This part of the city is home to 42 parks, including Kadriorg Park, Toompark, Hirvepark, and Tammsaare Park. The coastline gulf stretches from the Linnahall to a memorial of Maarjamäe.

Kesklinn has 21 subdistricts (Estonian: asum): Aegna, Juhkentali, Kadriorg, Kassisaba, Keldrimäe, Kitseküla, Kompassi, Luite, Maakri, Mõigu, Raua, Sadama, Sibulaküla, Südalinn, Tatari, Tõnismäe, Torupilli, Ülemistejärve, Uus Maailm, Vanalinn and Veerenni.

Kesklinn has a population of 57,731 (As of 1 November 2014).

Ethnic composition 1989-2021

Ethnicity	1989		2000		2011		2021
	amount	%	amount	%	amount	%	amount	%
Estonians	39086	55.5	30658	68.1	34956	75.2	42053	65.1
Russians	24625	35.0	10867	24.1	8528	18.3	10942	17.0
Ukrainians	-	-	-	-	618	1.33	1623	2.51
Belarusians	-	-	-	-	292	0.63	469	0.73
Finns	-	-	-	-	395	0.85	1241	1.92
Jews	-	-	-	-	261	0.56	306	0.47
Latvians	-	-	-	-	85	0.18	297	0.46
Germans	-	-	-	-	82	0.18	454	0.70
Tatars	-	-	-	-	54	0.12	93	0.14
Poles	-	-	-	-	58	0.12	161	0.25
Lithuanians	-	-	-	-	81	0.17	159	0.25
unknown	5	0.01	681	1.51	140	0.30	1157	1.79
other	6721	9.54	2803	6.23	944	2.03	5596	8.67
Total	70437	100	45009	100	46494	100	64551	100

Population development

Year	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014
Population	44,205	45,652	46,180	46,041	47,671	48,158	48,646	50,182	51,308	52,820	55,750