The name Polyaenus or Polyenus (Greek: Πoλύαινoς, romanized: Poluainos, lit. 'many proverbs') may refer to:
- Polyaenus, 2nd century Macedonian author
- Polyaenus of Lampsacus (c. 340 – 278 BC), Greek mathematician
- Polyaenus (wasp), a genus of wasp
The name Polyaenus or Polyenus (Greek: Πoλύαινoς, romanized: Poluainos, lit. 'many proverbs') may refer to: