Modifier may refer to:
- Grammatical modifier, a word that modifies the meaning of another word or limits its meaning
- Compound modifier, two or more words that modify a noun
- Dangling modifier, a word or phrase that modifies a clause in an ambiguous manner
- Modifier key, a kind of key on a computer keyboard that changes the semantics of other keys (e.g. the shift key)
- In 3D computer graphics, an attribute that modifies a polygonal mesh to change its geometry, but preserves the original vertex data
- Car tuner, one who modifies the performance or appearance of a vehicle
- Alphanumeric or numeric two-digit characters used to indicate certain circumstances or changes made to procedural, surgical, service, and supplies codes in the HCPCS clinical coding system
See also
- Modification (disambiguation)
- Modified (disambiguation)
- Single-word modifier (disambiguation)