Foliation may refer to:
- Foliation, a geometric device used to study manifolds
- Foliation (geology), a property of certain rocks
- A pagination system in book production
- Vernation, the growth and arrangement of leaves
- In architecture, an ornamentation consisting of a carved leaf shape, as in trefoils
- In dragonfly morphology, leaf-like extensions on segment 8 or segment 9 of the abdomen