Sphere with Inner Form (BH 333) is a bronze sculpture by English artist Barbara Hepworth, with six castings made in 1963 and two more 1965.
It is sometimes interpreted as a child in a pregnant woman's womb, or as a metaphor for the creation of a sculpture.
The brown polished outer surface of the sphere contrasts with the greenish patina inside.
Hepworth first carved a plaster form on an aluminium armature to create a mould for the sculpture.
Hepworth donated a one copy of the work (cast 6/7) to an auction for the benefit of the Institute of Contemporary Arts in 1966.