Octagon Building can refer to:
United Kingdom
- Octagon Building, UCL, the Main building at University College London, all or more especially the central part of which is referred to as the Octagon Building
United States
- Octagon Building (Santa Cruz, California)
- Andrew Gildersleeve Octagonal Building, Mattituck, New York
- The Octagon (Roosevelt Island, New York)
- Octagonal Building, part of the Mexico exhibit at the 1884 World Cotton Centennial fair in New Orleans, Louisiana
- City Hall (University City, Missouri)
See also
- List of octagonal buildings and structures
- List of octagonal buildings and structures in the United States
- Octagon house
- Octagon barn (disambiguation)
- Octagonal Schoolhouse (disambiguation)
- Round barn covers some octagonal and many-sided barns.
- Octagonal churches in Norway
This disambiguation page lists articles associated with the title Octagon Building.
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