Octagon barn
- Baker Octagon Barn
- Fobes Octagon Barn
- Gerhardt Octagonal Pig House
- Grimes Octagon Barn
- Harnsberger Octagonal Barn
- J. F. Roberts Octagonal Barn
- James Wimer Octagonal Barn
- Kinney Octagon Barn
- Lattin-Crandall Octagon Barn
- List of octagonal buildings and structures in the United States
- Lunn-Musser Octagon Barn
- Mexico Octagon Barn
- National Register of Historic Places listings in Wright County, Minnesota
- Octagon Barn, Otter Township
- Octagon Barn, Richland Township
- Octagon Building (disambiguation)
- Octagon House (disambiguation)
- Octagonal Poultry House
- Polygonal Barn (disambiguation)
- Rankin Octagonal Barn
- Roberts Octagon Barn
- Rodman Octagonal Barn
- San Luis Obispo Octagon Barn
- Secrest Octagon Barn
- Sylvanus Marriage Octagonal Barn
- Thumb Octagon Barn
- Tim Thering Octagon Barn