- sphere of complex numbers
- sphere of contact
- sphere of curvature
- sphere of Edoxus
- sphere of gravity
- sphere of influence
- sphere of inversion
- sphere of similarity
- sphere packing
- sphere packings problem in higher dimensional space
- sphere pair
- sphere point picking
- sphere pole
- sphere pole mapping
- sphere-pole mapping
- sphere-preserving theorem
- sphere-preserving transformation
- Spheres Justice: A Defense of Pluralism and Equality
- sphere-sphere intersection
- sphere surface representation of complex numbers
- sphere tetrahedron picking
- sphere theorem
- sphere triangle picking
- sphere with handles
- sphere with tunnel