Catalan can refer to:

• Catalan people
• Catalan language
• Catalan wine
• An inhabitant of Catalonia
• Catalan Ornithological Institute
• Eugčne Charles Catalan, a mathematician
• Catalan solid, a concept in mathematics
• Catalan number, a concept in mathematics
• Catalan's constant, mathematical constant
• Catalan Opening, a chess opening
• Catalan forge, an early type of open-hearth furnace
• Catalan vault, an architectural feature (also known as a Catalan arch or a Catalan turn)
• Catalan Atlas, a work of cartography in the 14th century
• Catalan Company (or Catalan Grand Company), a mercenary free company in 14th century Europe
• Catalan Punt Volat, an orthographic symbol
• Catalan Communications, a publisher of graphic novels during the 1980s
• The lunar crater Catalán
• Miguel Ángel Catalán (1894-1957), Spanish spectroscopist after whom the lunar crater is named
• Moses Chayyim Catalan a rabbi of Italy
• An alternative name used in France for wine made from the Carignan grape
• Catalan Dragons, a rugby league football club
• Catalan (game), a card game

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