Spheres
- Apollonius Spheres
- Archimedes' Hat-Box Theorem
- Archimedes' Problem
- Ball
- Bowl of Integers
- Bubble
- Circumsphere
- Cone-Sphere Intersection
- Cubic Close Packing
- Cylinder-Sphere Intersection
- Dandelin Spheres
- Double Sphere
- Ellipsoidal Section
- Genesa
- Globe
- Glome
- Great Circle
- Hemisphere
- Hemispherical Function
- Hexagonal Close Packing
- Hexlet
- Hypersphere
- Insphere
- Inversion Sphere
- Kepler Conjecture
- Kepler Problem
- Kollros' Theorem
- Kulikowski's Theorem
- Latitude
- Liebmann's Theorem
- Local Cell
- Local Density
- Local Density Conjecture
- Longitude
- Meridian
- Midradius
- Midsphere
- Mikusiński's Problem
- n-Sphere
- North Pole
- Osculating Sphere
- Pseudocircle
- Radius
- Random Close Packing
- Random Sphere Packing
- Reuleaux Tetrahedron
- Sangaku Problem
- Small Circle
- Soccer Ball
- Solid Angle
- South Pole
- Space Division by Spheres
- Sphere
- Sphere Eversion
- Sphere Line Picking
- Sphere Packing
- Sphere Point Picking
- Sphere-Sphere Intersection
- Sphere Tetrahedron Picking
- Sphere with Tunnel
- Spheric Section
- Spherical Cap
- Spherical Cone
- Spherical Distance
- Spherical Lune
- Spherical Polyhedron
- Spherical Ring
- Spherical Sector
- Spherical Segment
- Spherical Shell
- Spherical Simplex
- Spherical Slice
- Spherical Wedge
- Spheroidal Section
- Tangent Spheres
- Torispherical Dome
- Unit Ball
- Unit Sphere
- Viviani's Curve
- Wulff Shape
- Zone