The 5th arrondissement of Paris (V arrondissement) is one of the 20 arrondissements of the capital city of France. In spoken French, this arrondissement is referred to as le cinquième.

The arrondissement, also known as Panthéon, is situated on the Rive Gauche of the River Seine. It is one of the capital's central arrondissements. The arrondissement is notable for being the location of the Latin Quarter, a district dominated by universities, colleges, and prestigious high schools since the 12th century when the University of Paris was created. It is also home to the National Museum of Natural History and Jardin des plantes in its eastern part.

The 5th arrondissement is also one of the oldest districts of the city, dating back to ancient times. Traces of the area's past survive in such sites as the Arènes de Lutèce, a Roman amphitheatre, as well as the Thermes de Cluny, a Roman thermae.

The 5th arrondissement covers some 2.541 km (0.981 sq. miles, or 628 acres) in central Paris.

The population of the arrondissement peaked in 1911 when the population density reached almost 50,000 inhabitants per km. In 2009, the population was 61,531, while 48,909 worked in the arrondissement.

Year (of French censuses)	Population	Density (inh. per km)
1872	96,689	38,052
1911 (peak of population)	121,378	47,768
1954	106,443	41,890
1962	96,031	37,793
1968	83,721	32,948
1975	67,668	26,630
1982	62,173	24,468
1990	61,222	24,094
1999	58,849	23,160
2009	61,531	24,225

Place of birth of residents of the 5th arrondissement in 1999

Born in metropolitan France	Born outside metropolitan France
80.0%	20.0%
	Born in overseas France	Born in foreign countries with French citizenship at birth	EU-15 immigrants	Non-EU-15 immigrants
	0.8%	4.5%	5.4%	9.3%
This group is made up largely of former French settlers, such as pieds-noirs in Northwest Africa, followed by former colonial citizens who had French citizenship at birth (such as was often the case for the native elite in French colonies), as well as to a lesser extent foreign-born children of French expatriates. A foreign country is understood as a country not part of France in 1999, so a person born for example in 1950 in Algeria, when Algeria was an integral part of France, is nonetheless listed as a person born in a foreign country in French statistics. An immigrant is a person born in a foreign country not having French citizenship at birth. An immigrant may have acquired French citizenship since moving to France, but is still considered an immigrant in French statistics. On the other hand, persons born in France with foreign citizenship (the children of immigrants) are not listed as immigrants.

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The V arrondissement is the oldest arrondissement in Paris, and was first built by the Romans.

The construction of the Roman town Lutetia dates back to the 1st century BC, which was built after the conquest of the Gaulish site, situated on the île de la Cité by the Romans.

Saint-Hilaire is a ruined 12th-century church in Paris, active until the French Revolution.

The Ministry of Higher Education and Research has its head office in the arrondissement.

Sony Computer Science Laboratories [ja] (ソニーコンピュータサイエンス研究所) Paris is located in the arrondissement, and the Bureau d'Enquêtes sur les Événements de Mer (BEAmer) at one time had its head office there.

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  Map of the 5th arrondissement
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  The 5th arrondissement in OpenStreetMap
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  Neighborhoods of the 5th arrondissement
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  Metro map of the 5th arrondissement

As part of the Latin Quarter, the 5th arrondissement is known for its high concentration of educational and research establishments.

• Collège de France
• Collège international de philosophie
• École Polytechnique (historical campus; the school has now been relocated)
• PSL University
  • École Normale Supérieure
  • ENSCP - Chimie Paris
  • ESPCI Paris
• Sorbonne University - Faculté des sciences
  • Jussieu Campus
• Université Paris Cité
  • Faculté de médecine de Paris Centre
  • Institut de Physique du Globe de Paris
• Sorbonne
  • Sorbonne University - Faculté des Lettres
  • University of Paris I Panthéon-Sorbonne
  • University of Paris III Sorbonne Nouvelle
  • Rectorate of Paris
• Famous lycées with preparatory classes to the Grandes écoles
  • Lycée Louis-le-Grand
  • Lycée Henri IV

• 5th arrondissement travel guide from Wikivoyage