Atrium may refer to:
Music "ATRIUM", a 2025 track by Toby Fox from Deltarune Chapters 3+4 OST from the video game Deltarune Anatomy Atrium (heart), an anatomical structure of the heart Atrium, the genital structure next to the genital aperture in the reproductive system of gastropods Atrium of the ventricular system of the brain Pulmonary alveolus (also known as atrium alveolus), microscopic air sac in the lungs
Architecture Atrium (architecture), an open space within a building, either open to the sky or featuring a glass roof Ancient Roman atrium, a grand entrance hall, reception room, and living room in a traditional Roman house.
Specific buildings Amot Atrium Tower, a tower in Ramat Gan, Israel Atrium, Cardiff, a University of South Wales building in Cardiff Atrium Building, a skyscraper in Guatemala City Atrium Casino, a casino in Dax, France Atrium Cinemas, a movie theatre in Karachi, Pakistan Winter Garden Atrium, a Brookfield Properties building in the World Financial Center of the World Trade Center, New York City Atrium on Bay, a retail and office complex in Toronto, Canada
Companies Atrium Health, based in Charlotte, North Carolina
See also The Atrium (disambiguation)