Acute may refer to:
Science and technology
- Acute angle
- Acute (medicine), a disease that it is of short duration and of recent onset.
- Acute toxicity, the adverse effects of a substance from a single exposure or in a short period of time
- Acute accent, a diacritic used in many modern written languages
- Acute (phonetic), a perceptual classification
- Acutance: in photography, a subjective perception of sharpness related to the edgecontrast of an image