Dactyl may refer to:
- Dactyl (mythology), a legendary being
- Dactyl (poetry), a metrical unit of verse
- Dactyl Foundation, an arts organization
- Finger, a part of the hand
- Dactylus, part of a decapod crustacean
- "-dactyl", a suffix used in taxonomy
- Dactyl (moon), a moon of asteroid 243 Ida
- Dactyl (math), a 300 BC unit of measure being 40 poppy seeds wide or about 3/4 inch. See Sand Reckoner.