In Greek mythology, Clymenus, or Klyménos ("notorious") may refer to any number of individuals:

1. Clymenus was the father of Eurydice.
2. Clymenus was the son of King Aeneas of Calydon.
3. Clymenus was a King of Olympia.
4. Clymenus was a King of Arcadia.
5. Clymenus was a King of Boeotia and father of Phaeton by Merope.
6. Clymenus was also an alternate name for Hades.