Kalk (German: Köln-Kalk [ˈkœln ˈkalk], Kölsch: Kallek [ˈkalək] or [kalːk]) is the Eighth borough or Stadtbezirk of Cologne, Germany. Kalk was merged into the city of Cologne in 1910, the borough was formed in 1975.

The borough of Kalk borders with Mülheim to the North, Rheinisch-Bergischer Kreis to the East, the Cologne borough of Porz to the South and Deutz to the West.

This section is empty. You can help by adding to it. (December 2010)

Kalk consists of nine Stadtteile (city parts):

#	City part	Population (2009)	Area (km)	Pop. per km	map
801	Humboldt/Gremberg	14,835	2,82	5,258
802	Kalk	21,192	2,97	7,128
803	Vingst	11,558	1,12	10,315
804	Höhenberg	11,936	2,20	5,436
805	Ostheim	10,720	3,75	2,862
806	Merheim	9,540	3,81	2,507
807	Brück	9,734	7,51	1,297
808	Rath/Heumar	10,957	13,1	837
809	Neubrück	8,573	1,10	7,806
source: Die Kölner Stadtteile in Zahlen 2010 (in German)

The Kaiserin-Theophanu-Schule is located in Kalk.

The Japanische Schule Köln e.V. (ケルン日本語補習授業校 Kerun Nihongo Hoshū Jugyō Kō), a Japanese weekend school, holds its classes in the Kaiserin-Theophanu-Schule. It began holding classes there as of 20 August 2009.

Kalk is served by numerous railway stations and highways. Train stations include Köln-Trimbornstraße and numerous light rail stations of Cologne Stadtbahn line 1 and 9. The Bundesautobahn 3 and 4 connect Kalk with the Cologne Beltway.

• Official webpage of the district (in German)