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 (imprint), an imprint of Simon & Schuster
- Atria (company), a Finnish meat company