The Thirty Tyrants who ruled over ancient Athens after the collapse of democracy

The Tyranny of Critias
Critias and the Thirty Critias sits at the head of a council chamber. © History Skills

Athens—once a beacon of freedom and intellectual brilliance—found itself in ruins after its crushing defeat in the Peloponnesian War.

 

With its military shattered and its spirit broken, the proud city became vulnerable to forces that sought to dismantle its cherished democratic ideals.

 

Enter the Thirty Tyrants, a brutal oligarchy handpicked by Sparta to reshape Athens according to their will. For eight months, these men turned Athens into a city of fear.

 

Thousands were exiled, property was seized, and the streets ran red with the blood of those who dared to oppose them.

 

But how could a city known for democracy fall under the iron grip of tyranny? 

Athens after the Peloponnesian War

In 404 BCE, Athens faced utter ruin. After a devastating 27-year conflict, the Peloponnesian War had stripped the city of its once-great empire, leaving it humiliated and broken.

 

The final blow came with the siege of Athens by Sparta, which cut off its vital food supply and forced the city into starvation.

 

The proud city, unable to maintain its naval dominance or fend off attacks, surrendered unconditionally. 

The terms of defeat were harsh. Athens had to tear down its long walls, dismantle its fleet, and accept Spartan hegemony.

 

Sparta, the victor, sought to control their weakened rival by dismantling its democratic system and did not hesitate to impose a new order.

 

They appointed Lysander, a Spartan general and statesman, to oversee the transformation of Athens into an oligarchy.

 

He selected thirty Athenian men who shared a disdain for democracy and could be trusted to implement an authoritarian regime.

 

By replacing democracy with oligarchy, Sparta tried to ensure that Athens would never challenge its authority again. 

Who were the Thirty Tyrants?

The Thirty Tyrants were chosen from Athens' wealthiest and most conservative factions.

 

These men came from aristocratic backgrounds and had long resented the influence of democratic institutions, which they believed catered to the lower classes and undermined their own power.

 

Many of them, like Critias and Theramenes, had been active in political circles before the fall of Athens, advocating for a more restricted form of government that favored the elite.

 

Their political ambitions aligned perfectly with Sparta’s desire to curb Athens’ democratic tendencies. 

Critias, who stood out as the most ruthless of the Thirty, had strong ties to the intellectual and aristocratic elite of Athens.

 

His association with Socrates and his disdain for democracy made him a natural leader within the oligarchic regime.

 

Theramenes, by contrast, initially supported the oligarchy but quickly became uneasy with the extreme measures Critias and others employed.

 

Although he had once fought for Sparta during the Peloponnesian War and shared their interests, he ultimately sought a more moderate approach. 

Several other members of the Thirty came from wealthy families that had lost influence during the years of democratic rule.

 

Their motivations were largely driven by personal ambition and a desire to restore their status within Athenian society.

 

They aligned themselves with Sparta in hopes of securing power, seeing the collapse of democracy as an opportunity to reshape the city in their favor.

 

To maintain control, the Thirty relied on a Spartan garrison to enforce their will. 


The Rule of Terror

The Thirty Tyrants began their reign by purging the city of anyone they saw as a threat, targeting democratic leaders, wealthy citizens, and anyone with influence.

 

Critias, the most ruthless of the Thirty, spearheaded these actions, overseeing the execution of roughly 1,500 Athenians.

 

Many of these victims were executed without trial, their property seized by the regime to enrich the oligarchs and their supporters. 

To further consolidate their control, the Thirty exiled thousands of Athenians. In total, it is estimated that more than 5,000 citizens were forced to leave the city, many fleeing to neighboring regions like Thebes.

 

These exiles included democrats, moderates, and even those who posed no direct political threat but were seen as potential enemies.

 

Without the presence of these influential citizens, the remaining population in Athens was easier to control.

 

Under pressure, some Athenians supported the regime out of fear or self-preservation, knowing that any dissent could lead to imprisonment, execution, or confiscation of their wealth. 

The Thirty also targeted democratic institutions themselves, shutting down the assembly and limiting political participation to a select group of 3,000 men.

 

This small, oligarchic body had the exclusive right to bear arms and govern the city, leaving the majority of Athenians powerless and vulnerable.

 

At times, they even turned on themselves. 


The power struggle between Critias and Theramenes

The internal conflict between Critias and Theramenes became a defining feature of the Thirty Tyrants' rule.

 

From the outset, Critias sought to impose an unforgiving and violent regime, believing that only through ruthless purges could Athens be reshaped into an oligarchic state loyal to Sparta.

 

Theramenes, on the other hand, initially supported the oligarchy but soon began to push back against the extreme measures Critias was enforcing.

 

He argued that the indiscriminate killing and repression were alienating too many Athenians, which he thought would weaken the regime’s long-term stability. 

This division created a factional split within the Thirty. While Critias had the loyalty of those who believed in his harsh tactics, Theramenes attracted supporters who favored a more moderate approach.

 

Under pressure, Critias intensified his violent policies, executing citizens on the slightest suspicion of disloyalty.

 

Theramenes, however, began to voice concerns publicly. He believed that some level of compromise with the people was necessary to ensure the regime’s survival.

 

In response, Critias accused Theramenes of undermining the oligarchy. 

Critias was unwilling to tolerate dissent within his ranks and took decisive action. He had Theramenes arrested and accused of treason.

 

During a rigged trial, Theramenes defended himself skillfully, but Critias controlled the proceedings. He ordered Theramenes’ immediate execution.

 

This only deepened the fear among the remaining members of the Thirty and their supporters.

 

Yet, it also further alienated the Athenian population, as many saw Theramenes’ death as evidence of the regime’s unchecked cruelty. 


How Thrasybulus overthrew the tyrants

After the removal of Theramenes, a man named Thrasybulus became one of the most important leaders of the resistance.

 

He was A skilled general and staunch supporter of democracy. Based upon his experience in the Peloponnesian War, he had earned a reputation for courage and honest leadership.

 

He had been exiled to Thebes, but there, Thrasybulus began gathering support among the scattered Athenian democrats and other Greek states opposed to Sparta’s influence.

 

In 403 BCE, he led a daring campaign to reclaim Athens. Relying upon a small force, he seized the fortress at Phyle, which was a strategic point near the city.

 

From this position, he launched raids against the Thirty and gathered more followers as word spread of his efforts to restore democracy.

 

His initial success inspired hope among the exiled Athenians and those still inside the city who opposed the regime. 

Thrasybulus advanced to Piraeus, the vital port of Athens, where he fortified his position.

 

In response, Critias led a force to crush the democratic resistance, but during the fierce fighting at the Battle of Munychia, Critias himself was killed.

 

His death dealt a devastating blow to the oligarchic regime, as he had been the most influential leader among the Thirty.

 

In the aftermath, the remaining tyrants struggled to maintain order. Meanwhile, support for Thrasybulus continued to grow as Athenians saw an opportunity to end the violent rule of the Thirty.  

At this point, Sparta intervened, but not in the way the Thirty Tyrants had hoped.

 

Internal divisions within the Spartan leadership led to a split on how to handle the crisis.

 

Pausanias, one of the Spartan kings, decided to mediate rather than fully support the oligarchs.

 

In a surprising turn, Pausanias negotiated a settlement between Thrasybulus’ forces and the remaining supporters of the Thirty.

 

The agreement, reached later in 403 BCE, allowed for the peaceful re-establishment of democracy in Athens.


How Athens restored democracy

After the fall of the Thirty Tyrants in 403 BCE, Athens faced the difficult task of reconciling a deeply divided city.

 

The first priority was to restore the democratic institutions that had been dismantled during the reign of the Thirty.

 

To achieve this, Thrasybulus, now hailed as a hero of democracy, proposed an amnesty that would protect most Athenians from prosecution for crimes committed under the oligarchy.

 

However, those directly responsible for the violent acts of the Thirty, particularly the tyrants themselves, were excluded from the amnesty.

 

Several members of the Thirty had already fled the city, but those who remained were executed.  

In an effort to rebuild trust in the democratic process, Athens also took measures to prosecute individuals who had collaborated too closely with the tyrants.

 

Yet, in a pragmatic move, the leaders of the restored democracy sought to avoid large-scale purges, understanding that the stability of the city depended on avoiding further internal strife.

 

By the end of 403 BCE, Athens had largely completed this process of retribution. 

In addition to trials, there was a concerted effort to heal the deep wounds left by years of violence and fear.

 

The rebuilding of the Athenian assembly and courts symbolized a return to the democratic ideals.

 

Athenians who had been exiled under the Thirty were allowed to return, and confiscated property was restored to its rightful owners.

 

Importantly, the Athenians instituted a formal oath of reconciliation, in which citizens swore not to seek retribution for past political offenses.

 

Thanks to this careful balance of justice and forgiveness, Athens managed to recover from one of the darkest periods in its history.