Shrinkage may refer to:
Reduction in size of a solid material
- Shrinkage (casting), size reduction of liquid metal as it solidifies
- Shrinkage (concrete), size reduction of concrete as it sets and ages
- Shrinkage (fabric), size reduction of fabric when washed with water or hot water
- Shrinkage (wood), size reduction of wood as it dries
Other uses
- Shrinkage (accounting), loss of product inventory due to theft, damage, spoilage, etc.
- Shrinkage defect or shrinkage void, a casting defect caused by metal solidifying from the outside inward
- Shrinkage (statistics), a technique to improve an estimator
- Shrinkage (slang)