Pyrrhus or Pyrrhos (Pyrros; 319/318 BCE–272 BCE) is a Greek general and statesman of the Hellenistic era.

He is king of the Greek tribe of Molossians, of the royal Aeacid house (from circa 297 BCE), and later he becomes king of Epirus (r. 306–302, 297–272 BCE) and Macedon (r. 288–284, 273–272 BCE).

He is one of the strongest opponents of early Rome.

Some of his battles, though successful, cost him heavy losses, from which the term "Pyrrhic victory" is coined.

He is the subject of one of Plutarch's Parallel Lives.