Mülheim (German: Köln-Mülheim [ˈmyːlhaɪm]; Kölsch: Möllem [ˈmølːəm]) is a borough (Stadtbezirk) of Cologne in Germany and a formerly independent town (Mülheim am Rhein). Mülheim is located on the right bank of the Rhine opposite the old town of Cologne.

The district borders Leverkusen to the north, Bergisch Gladbach to the east, the Cologne districts of Kalk and Innenstadt to the south. The river Rhine lies west of Mülheim, on the other riverbank lies the Cologne borough of Nippes.

The district is ethnically diverse, with a significant Turkish population.

The place was first mentioned (as Mulenheym) in 1098 and became a town in 1322; it belonged to the County of Berg. In April 1914, Mülheim was incorporated into Cologne.

Mülheim consists of nine Stadtteile (city parts):

#	City part	Population (2020)	Area (km)	Pop. per km	map
901	Mülheim	42,441	7.07	6,034
902	Buchforst	7,431	0.83	8,976
903	Buchheim	12,750	2.85	4,482
904	Holweide	20,871	4.11	5,099
905	Dellbrück	21,801	9.95	2,202
906	Höhenhaus	15,708	5.07	3,103
907	Dünnwald	11,583	10.84	1,072
908	Stammheim	8,332	3.74	2,234
909	Flittard	8,039	7.74	1,043
source: Kölner Stadtteilinformationen 2020

Mülheim is served by numerous railway stations and highway. Train stations include Köln-Mülheim, Köln-Buchforst, Köln-Dellbrück and Köln-Stammheim, as well as numerous light rail stations of Cologne Stadtbahn line 3, 4, 13 and 18. Bundesautobahn 3 passes through Dellbrück and Dünnwald, as part of the Cologne Beltway.

• B 51 Mülheimer Brücke

• Cologne Mülheim Protestant Cemetery

• Adam Adami, Roman Catholic diplomat and priest (1610–1663)
• Abraham Roentgen, cabinet maker (1711–1793)
• Herbert Eulenberg, poet and author (1876–1949)
• Catharina Josepha Pratten, guitarist and composer (1821–1895)
• Johann Bendel, rector and historian (1863–1947)
• Peter Kürten, serial killer (1883–1931)
• Willi Ostermann, singer and poet (1876–1936)
• Adolf Rodewyk, Jesuit and exorcist (1894–1989)
• Rainer Woelki, Archbishop of Cologne (*1956)

• "Mülheim-am-Rhein" . Encyclopædia Britannica. Vol. 18 (11th ed.). 1911. p. 960.
• Official webpage of the district (in German)