Atria may refer to:

• Atrium (heart) (plural: atria), an anatomical structure of the heart
• Atrium (architecture) (plural: atria), a large open space within a building
• Atria (star) or Alpha Trianguli Australis, a star in the constellation Triangulum Australe
• Atria Senior Living, an American assisted living company
• Atria or Adria, an Etruscan city in the Veneto region of Northern Italy
• Atria or Atri, Italy, an ancient city in the Abruzzo region of Central Italy
• Atria, an imprint of Simon & Schuster
• Atria, a song by the Japanese visual kei band 新興宗教楽団NoGoD
• Atria, a Finnish meat and food processing company

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