Cavitation is the formation of vapour cavities in a liquid.

Cavitation may also refer to:

Cavitation (embryology), the formation of cavities in an organ Cavitation (lung), an air pocket in the lung Cavitation (bone), an area of dead bone Cavitation (elastomers), the unstable expansion of a microscopic void in a solid elastomer under the action of tensile hydrostatic stresses Cavitation, a void in tissue resulting from penetrating trauma