Perdiccas III was king of Macedonia from 364 to 359 BC, succeeding his brother Alexander II.

Son of Amyntas III and Eurydike, he was underage when Alexander II was killed by Ptolemy of Aloros , who then ruled as regent. Perdiccas killed him and took the throne himself.

Perdiccas was killed in a battle against Bardylis, and was succeeded by his younger brother Philip II.