Mülheim, officially Mülheim an der Ruhr (Low German: Mölm; Kölsch: Müllem; German pronunciation: [ˈmyːlhaɪm ʔan deːɐ̯ ˈʁuːɐ̯] ) and also described as "City on the River", is a city in North Rhine-Westphalia in Germany. It is located in the Ruhr Area between Duisburg, Essen, Oberhausen and Ratingen. It is home to many companies, and two Max Planck Institutes.

Mülheim an der Ruhr received its town charter in 1808, and 100 years later the population exceeded 100,000, making Mülheim officially a city. At the time of the city's 200th anniversary with approximately 170,000 residents, it was counted among the smaller cities of Germany.

Mülheim an der Ruhr is located to the southwest of Essen in the Ruhr valley.

The northern foothills of the Rhenish Massif are characterised by the distinctive rock formation of the bare mountain slopes through which run coal-bearing layers which formed during the carboniferous period. Here the Ruhr cuts more than 50 meters deep into this Mittelgebirge. This natural erosion partly uncovered these mineable black coal deposits, which enabled their exploration and extraction using adits. However, the coal-rich layers became ever deeper as one progressed northward, which required setting up mines to extract the black coal. In contrast, the broad bayou (dead arm of a river) of Styrum borough is characteristic of the features of the Lower Rhine Plain.

Rank	Nationality	Population (31.12.2022)
1	Turkey	4,807
2	Syria	2,910
3	Serbia	1,594
4	Iraq	1,423
5	Poland	1,357
6	Ukraine	1,306
7	Romania	1,243
8	Italy	1,149
9	China	1,017
10	Kosovo	964

The U18 metro line connects the city with Essen.

The current mayor of Mülheim is Marc Buchholz of the Christian Democratic Union (CDU) since 2020. The most recent mayoral election was held on 13 September 2020, with a runoff held on 27 September, and the results were as follows:

Candidate		Party	First round		Second round
			Votes	%	Votes	%
	Marc Buchholz	Christian Democratic Union	16,479	25.4	27,716	56.9
	Monika Griefahn	Social Democratic Party	16,385	25.3	20,984	43.1
	Wilhelm Steitz	Alliance 90/The Greens	10,178	15.7
	Horst Bilo	Independent	5,394	8.3
	Jürgen Abeln	Independent	4,907	7.6
	Andreas Brings	Die PARTEI	3,940	6.1
	Alexander von Wrese	Alternative for Germany	3,920	6.0
	Amrei Debatin	Free Democratic Party	1,853	2.9
	Jochen Dirk Hartmann	Independent	945	1.5
	Martin Ulrich Fritz	Civic Awakening Mülheim	808	1.2
Valid votes			64,809	98.7	48,700	98.6
Invalid votes			879	1.3	679	1.4
Total			65,688	100.0	49,379	100.0
Electorate/voter turnout			130,571	50.3	130,561	37.8
Source: State Returning Officer

The Mülheim city council governs the city alongside the mayor. The most recent city council election was held on 13 September 2020, and the results were as follows:

Party		Votes	%	+/-	Seats	+/-
	Christian Democratic Union (CDU)	16,970	26.3	0.9	14	1
	Alliance 90/The Greens (Grüne)	15,097	23.4	12.4	13	7
	Social Democratic Party (SPD)	13,765	21.3	10.2	12	5
	Alternative for Germany (AfD)	4,629	7.2	1.9	4	1
	Mülheimer Citizens' Initiative (MBI)	3,043	4.7	5.4	3	2
	Free Democratic Party (FDP)	3,003	4.7	0.7	3	±0
	Die PARTEI (PARTEI)	2,866	4.4	New	2	New
	The Left (Die Linke)	1,751	2.7	1.4	1	1
	We From Mülheim (WIR)	1,560	2.4	1.0	1	±0
	Civic Awakening Mülheim (BAMH)	1,173	1.8	New	1	New
	Alliance for Education (BüfBi)	424	0.7	0.3	0	1
	Independents	226	0.4	–	0	–
Valid votes		64,507	98.3
Invalid votes		1,144	1.7
Total		65,651	100.0		54	±0
Electorate/voter turnout		130,571	50.3	0.0
Source: State Returning Officer

Mülheim an der Ruhr is twinned with:

Mülheim is home to two Max Planck Institutes, a university campus, and various other educational and scientific institutions.

• Max Planck Institute for Coal Research
• Max Planck Institute for Chemical Energy Conversion
• Ruhr West University of Applied Sciences, main campus
• IWW Water Centre, water research institute of the University of Duisburg-Essen
• 39 Schools, among them 22 primary schools, 12 general secondary schools, 2 vocational schools, 1 Waldorf school, and 2 special schools

• Plus (founded 1972), a supermarket chain
• Tengelmann (founded 1867), a holding company
• Aldi Süd (founded 1946, split in two parts in 1960, renamed to Aldi Süd in 1962), a discount supermarket chain
• Harke Group, formerly Syntana (founded 1965), a chemical and plastics distributor
• Europipe GmbH (founded 1991), main manufacturer of seamless pipes for the Nord Stream pipelines

• 1. FC Mülheim (founded 1923), a football club
• VfB Speldorf (founded 1919), a football club
• HTC Uhlenhorst Mülheim (founded 1920), a field hockey club

• Wilhelm Rittenhausen (1644–1708), founder of the first paper mill in North America
• Gerhard Tersteegen (1697–1769), Reformed religious writer
• Carl Arnold Kortum (1745–1824), physician, writer and poet
• August Bungert (1845–1915), opera composer and poet
• Wilibald Nagel (1863–1929), musicologist
• Hugo Stinnes (1870–1924), industrialist and founder of the German People's Party
• Fritz Thyssen (1873–1951), industrialist associated with the Nazi Party
• Carl Otto von Eicken (1873–1960), otorhinolaryngologist
• Heinrich Thyssen (1875–1947), German-Hungarian entrepreneur and art collector
• Arthur Kaufmann (1888–1971), painter
• Walter Hartmann (1891–1977), general of artillery in World War II
• Dagmar Mühlenfeld (born 1951), mayor of Mühleim
• Otto Pankok (1893–1966), painter, printmaker and sculptor
• Otto Roelen (1897–1993), chemist
• Karl Ziegler (1898–1973), chemist, Nobel Prize winner
• Clärenore Stinnes (1901–1990), car racer, the first person to circumnavigate the world by automobile
• Werner Best (1903–1989), jurist, police chief and Nazi leader
• Carl Balhaus (1905–1968), actor and director
• Ferdinand aus der Fünten (1909–1989), SS-Hauptsturmführer, war criminal
• Fritz Buchloh (1909–1998), footballer
• Günther Smend (1912–1944), officer and a resistance fighter involved in the July 20 Plot to assassinate Adolf Hitler
• Johannes Bölter (1915–1987), German Army tank commander during World War II
• Karl Albrecht (1920–2014), entrepreneur, Aldi founder
• Theo Albrecht (1922–2010), entrepreneur, Aldi founder
• Wilhelm Knabe (1923–2021), ecologist, pacifist, civil servant, politician and co-founder of the Green Party in Germany
• Wim Thoelke (1927–1995), TV entertainer
• Hermann Bottenbruch (1928–2019), mathematician and computer scientist
• Jürgen Sundermann (born 1940), football player and manager
• Hans Walitza (born 1945), football player and manager
• Rudolf Seliger (born 1951), footballer
• Bodo Hombach (born 1952), politician (SPD)
• Monika Griefahn (born 1954), politician (SPD)
• Hans-Günter Bruns (born 1954), footballer
• Helge Schneider (born 1955), comedian, musician, author, film and theatre director and actor
• Ralph Morgenstern (born 1956), television presenter and actor
• Albrecht von Croÿ (born 1958), journalist
• Ulla Kock am Brink (born 1961), television presenter
• Hannelore Kraft (born 1961), politician (SPD) and Minister-President of North Rhine-Westphalia
• Ralf Lübke (born 1965), athlete
• Carolin Emcke (born 1967), journalist
• Willi Landgraf (born 1968), footballer
• Sven Meinhardt (born 1971), field hockey player, Olympic winner
• André Lenz (born 1973), footballer
• Lars Burgsmüller (born 1975), tennis player
• Marion Rodewald (born 1976), field hockey player, Olympic winner
• Kai Gehring (born 1977), politician
• Felix Erdmann (born 1978), rowing cox
• Simone Hanselmann (born 1979), actress
• Salih Altın (born 1987), footballer
• Bobby Gunns (born 1992), professional wrestler
• Jonathan Rommelmann (born 1994), Olympic medalist
• Stephanie Stebich (born 1966), art historian
• Rüdiger Emshoff (born 1960), maxillofacial surgeon and associate professor

• 
  Courtyard of Schloss Broich
• 
  Town Hall
• 
  Mülheim Stadthalle
• 
  View to the street and tram station Aktienstraße
• 
  Friedrichstraße
• 
  Petrikirche
• 
  Highrise buildings in the city centre
• 
  Water feature in MüGa-Park

• Mülheim Hauptbahnhof

• "Mülheim-an-der-Ruhr" . Encyclopædia Britannica. Vol. 18 (11th ed.). 1911. p. 960.
• Official city homepage