The Institut océanographique de Paris (English: Oceanographic Institute of Paris), is an oceanographic institution founded in 1906 by Albert I, Prince of Monaco, which also includes the Oceanographic Museum of Monaco. The building was designated as a Monument historique in 2004. In 2011, for the 100 year anniversary, it was renamed the Maison de l'Océan.

The organization's founder, Albert I, Prince of Monaco, wanted to spread his knowledge and interest in oceanography, and as early as 1903 began teaching classes of the subject at the Conservatoire national des arts et métiers. The classes were successful, and led to the creation of the Oceanographic Institute in Paris, as well as the formation of the Institut océanographique organization in 1906.

The oceanographic institute was built in 1908 and completed in 1911. It is located in the 5th arrondissement of Paris near the Latin Quarter, on the corner of Rue Saint-Jacques and Rue Gay-Lussac, in the "Campus Curie", which includes other scientific institutions.

The building was designed by architect Henri-Paul Nénot, who also designed the nearby Sorbonne and the neighboring Institute of Geography [fr]. The latter is linked by a symbolic double arch (the Earth and the Ocean) to the Oceanographic Institute. The building's style is an Italian Renaissance palace in brick and stone, flanked by a tall square tower, which is similar to many others in the area.

This building includes two amphitheatres, three laboratories corresponding to three courses (physical oceanography, marine biology and physiology of marine biodiversity), a specialized library-media library, breeding grounds in the basement and official accommodation (managerial apartment and caretaker's studio).

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  Inauguration of the Institute in 1911
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  Sectional plan of the Oceanographic Institute
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  The Institute in 1912
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  Architectural diagram from the early 20th century

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  Main entrance door of the Institute
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  Commemorative text of the construction of the building
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  Prince Albert Medallion
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  The Center of the Sea and Waters (1977-2010)

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  Detail of the golds of the large amphitheater
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  Détail de la fresque du grand amphithéâtre : « sur le Pont de la Princesse Alice »
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  Prince Albert I of Monaco aboard Princess Alice with a butchered whale.
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  Large mural (detail)