Silphium is an unidentified plant recorded in classical antiquity, believed extinct.
Silphium or Silphion can also refer to:
- Silphium (genus) of North American daisies in the family Asteraceae known as "rosinweeds"
- Silphion (insect), an extinct protorthopteran insect genus in the family Anthracothremmidae
See also
edit- Silpium, a mountain in Greek mythology