Octagonal (disambiguation)
- 2022 FIFA World Cup qualification – CONCACAF third round
- Centered octagonal number
- List of octagonal buildings and structures
- Octagon (disambiguation)
- Octagonal (horse)
- Octagonal Building (disambiguation)
- Octagonal School (disambiguation)
- Octagonal antiprism
- Octagonal antiprismatic prism
- Octagonal barn (disambiguation)
- Octagonal bipyramid
- Octagonal deadhouse
- Octagonal house
- Octagonal number
- Octagonal prism
- Octagonal prismatic prism
- Octagonal tiling
- Octagonal trapezohedron
- Order-6 octagonal tiling
- Order-8 octagonal tiling
- Snub octagonal tiling
- Truncated octagonal tiling
- Truncated order-4 octagonal tiling
- Truncated order-8 octagonal tiling