Alcaeus may refer to:

People

  • Alcaeus of Mytilene ( – BC), a Greek lyric poet
  • Alcaeus (comic poet) (fl. 388 BC), a Greek Old Comedy poet
  • Alcaeus of Messene (late 3rd/early 2nd century BC), a Greek epigrammatist
  • Alcaeus and Philiscus (fl. 2nd-century BC), two Epicurean philosophers expelled from Rome in either 173 BC or 154 BC

Other

  • Alcaeus (bug), a genus of stink bugs in the family Pentatomidae
  • Alcaeus (mythology), several figures of this name in Greek mythology
  • 12607 Alcaeus, a main belt asteroid

See also

  • Alcaea