Thrasybulus ( el, Θρασύβουλος) was a tyrant who ruled

Syracuse Syracuse may refer to: Places Italy * Syracuse, Sicily, or spelled as ''Siracusa'' * Province of Syracuse United States *Syracuse, New York **East Syracuse, New York ** North Syracuse, New York * Syracuse, Indiana *Syracuse, Kansas *Syracuse, M ...

for eleven months during 466 and 465 BC. He was a member of the Deinomenid family and the brother of the previous tyrant Hiero, who seized power in Syracuse by convincing Gelon's son to give up his claim to the leadership of Syracuse. A few months later, members of the Deinomenid family overthrew him. However, the Deinomenid family was subsequently overthrown and a democracy was established in Syracuse.Aristotle's ''Politics'' 5.1312b

Notes

, width=25% align=center, Preceded by:

Hieron I Hiero or hieron (; grc, ἱερόν, "holy place") is a holy shrine, temple, or temple precinct in ancient Greece. Hiero may also refer to: Places and jurisdictions * Hieron, Caria, an Ancient city and former bishopric in Asia Minor, now Av ...

, width=25% align=center, Tyrant of Syracuse
466 BC– 465 BC , width=25% align=center, Succeeded by:
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democracy Democracy (From grc, δημοκρατία, dēmokratía, ''dēmos'' 'people' and ''kratos'' 'rule') is a form of government in which the people have the authority to deliberate and decide legislation (" direct democracy"), or to choose g ...

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position next held
by Dionysius I in 405 BC , - {{s-end Sicilian tyrants 5th-century BC Syracusans