A superstructure is an upward extension of an existing structure above a baseline, in civil and naval engineering.

Superstructure may also refer to:

Superstructure (condensed matter): some additional structure superimposed on a more basic structure, e.g. magnetic ordering in a crystal or helical ordering in a protein. A universe (mathematics) obtained from a set by taking the power set countably many times. A structure (mathematical logic) of which another structure is a substructure. A key concept in Marxist philosophy, see base and superstructure.

See also Megastructure (disambiguation) MegaStructures is a documentary television series