Metathesis could refer to the following:

• In phonology, a change that alters the order of phonemes, see Metathesis (linguistics).
• In chemistry, a reaction where parts of two reacting structures swap places, see Metathesis (chemistry); in organic chemistry, the term often refers particularly to olefin metathesis.

Metathese | Métathèse | Metatesis | Metathesis | Metatese | Metateza