5th-century BC regents

Spartan general and regent (died c. 477 BC)

Regent of Sparta between 480 and 479 BC

court official and murderer of King Xerxes

Sirras or Sirrhas (; d. 390 BC) was the son-in-law of the king of Lynkestis, Arrhabaeus ( 423–393 BC), having married his daughter Irra. He participated in an Illyrian-Lynkestian coalition's defeat of the attempted invasion of Lynkestis by the Macedonian king Archelaus. He may have been a Lynkestian prince-regent or an Illyrian chieftain, part of the Illyrian force in a previous and also successful Illyrian-Lynkestian coalition against Sparta and Macedon during the Peloponnesian War.

Spartan regent for king Pleistoanax, fl. 460–457 BC