Cardinal Lemoine (French pronunciation: [kaʁdinal ləmwan]) is a station on Line 10 of the Paris Métro. It is located the 5th arrondissement.

The station was opened on 26 April 1931 with the transfer of the section of Line 10 between Maubert – Mutualité and Place Monge to Line 7. Line 10 was deviated from its old route east of Maubert – Mutualité to the new station of Jussieu. Cardinal Lemoine was built at the southeastern end of the old route under Rue Monge.

It is named after the Rue du Cardinal Lemoine, named after Cardinal Jean Lemoine (1250–1313), a papal legate of Pope Boniface VIII to Philip IV the Fair. The Lycée Henri-IV is nearby.

As part of the RATP's "Metro Renewal" programme, the station's corridors and platform lighting were renovated and inaugurated on 20 November 2006.

The station has two entrances, each consisting of a fixed staircase embellished with a Dervaux-type balustrade:

• Access 1 - Rue du Cardinal-Lemoine, adorned with a Dervaux candelabra, leads to no. 55 of this street and no. 29 bis of Rue Monge;
• Access 2 - Rue Monge is located to the right of no. 28 of the same street.

Street Level

B1

Mezzanine

Line 10 platforms	Side platform, doors will open on the right
	Westbound	← toward Boulogne – Pont de Saint-Cloud (Maubert – Mutualité)
	Eastbound	→ toward Gare d'Austerlitz (Jussieu) →
	Side platform, doors will open on the right

Cardinal Lemoine is a standard configuration station. It has two platforms separated by the metro tracks and the vault is elliptical. The decoration is in the style used for most metro stations. The lighting canopies are white and rounded in the Gaudin style of the metro revival of the 2000s, and the bevelled white ceramic tiles cover the walls, the vault and the tunnel exits. The advertising frames are made of honey-coloured earthenware and the name of the station is also made of earthenware in the style of the original CMP. The Motte style seats are blue in colour. However, the station is distinguished by the lower part of its walls, which are vertical and not elliptical.

The station is served by lines 47, 75 and 89 of the RATP Bus Network.

• Montagne Sainte-Geneviève (located at the foot of this hill in the Latin Quarter, which has been known since the Middle Ages as the student district)
• Ministère de l'Enseignement supérieur, de la Recherche et de la Science
• Collège de France (situated on Place Marcelin-Berthelot)
• Lycée Henri-IV (situated on Rue Clovis)
• La Rue Mouffetard and its many shops
• La Nécropole républicaine du Panthéon

• Roland, Gérard (2003). Stations de métro. D’Abbesses à Wagram. Éditions Bonneton.