The Zebrzydowski Rebellion, or Sandomierz Rebellion, was a semi-legal revolt against King Sigismund, formed in August 1606 by Hetman Mikołaj Zebrzydowski, Jan Szczęsny Herburt, Stanisław Stadnicki, Aleksander Józef Lisowski and Prince Janusz Radziwiłł in Stężyca and Lublin.
It was primarily caused by the growing dissatisfaction with the King among the Polish szlachta and wealthy magnates.
In particular, the rebels disapproved of the King's efforts to limit the power of the nobles, his attempts to weaken the Sejm, and to introduce a hereditary monarchy in place of the elective one.
The rebellion (1606–08) ended in the defeat of the rebels.
Despite the failure to overthrow the King, the rebellion firmly established the dominance of the nobility over the monarch in the Polish political system.

The Polish nobles gathered at the rebellion formed a council and outlined their demands in 67 articles.
They demanded the dethronement of Sigismund III for breaching the Henrician Articles and the expulsion of the Jesuits from the Polish–Lithuanian Commonwealth.
They further demanded that the Sejm was to appoint state officials instead of the king; that local officials should be elected and not appointed; and that the rights of Protestants should be expanded and protected.
The 1607 Parliament rejected the demands.
Meanwhile, the rebel nobles gathered in the town of Guzów.
In 1607 the Polish Royal Army, led by Hetman Jan Karol Chodkiewicz, was sent to pacify the rebels.
A full-scale battle ensued on 5 July, with 200 casualties, which resulted in the victory of the Royalist forces.
By 1609 the rebellion was over.
Two years after the start of the revolt, the rebellious nobles formally surrendered to the king at the 1609 meeting of the Sejm, which became known as the Pacification Sejm.
In return for their surrender the rebels were granted leniency.
Many royal supporters, including Hetman Chodkiewicz, had successfully argued for amnesty for the rebels.
Despite the failure of the rebellion, it nevertheless ruined any chance that Sigismund III had to strengthen his role in the government.

After the rebellion, King Sigismund attempted to funnel the restless energy of the nobles into external wars.
This, combined with other factors, led to the Commonwealth's official involvement in the Polish–Muscovite War, which followed the early Dimitriads and invasions (1605–1609).

The first rebellion in Polish history had sinister consequences.
Royalty lost, to great extent, the moral prestige it had enjoyed... The Polish constitution was henceforth regarded as sacrosanct and the king had to renounce not only the idea of making any far-reaching changes in it, but even any reform.

— Oskar Halecki
The Zebrzydowski Rebellion, or Sandomierz Rebellion, was a semi-legal revolt against King Sigismund, formed in August 1606 by Hetman Mikołaj Zebrzydowski, Jan Szczęsny Herburt, Stanisław Stadnicki, Aleksander Józef Lisowski and Prince Janusz Radziwiłł in Stężyca and Lublin. It was primarily caused by the growing dissatisfaction with the King among the Polish szlachta and wealthy magnates. In particular, the rebels disapproved of the King's efforts to limit the power of the nobles, his attempts to weaken the Sejm, and to introduce a hereditary monarchy in place of the elective one. The rebellion (1606–08) ended in the defeat of the rebels. Despite the failure to overthrow the King, the rebellion firmly established the dominance of the nobility over the monarch in the Polish political system.
The Polish nobles gathered at the rebellion formed a council and outlined their demands in 67 articles. They demanded the dethronement of Sigismund III for breaching the Henrician Articles and the expulsion of the Jesuits from the Polish–Lithuanian Commonwealth. They further demanded that the Sejm was to appoint state officials instead of the king; that local officials should be elected and not appointed; and that the rights of Protestants should be expanded and protected. The 1607 Parliament rejected the demands. Meanwhile, the rebel nobles gathered in the town of Guzów. In 1607 the Polish Royal Army, led by Hetman Jan Karol Chodkiewicz, was sent to pacify the rebels. A full-scale battle ensued on 5 July, with 200 casualties, which resulted in the victory of the Royalist forces. By 1609 the rebellion was over. Two years after the start of the revolt, the rebellious nobles formally surrendered to the king at the 1609 meeting of the Sejm, which became known as the Pacification Sejm. In return for their surrender the rebels were granted leniency. Many royal supporters, including Hetman Chodkiewicz, had successfully argued for amnesty for the rebels. Despite the failure of the rebellion, it nevertheless ruined any chance that Sigismund III had to strengthen his role in the government.
After the rebellion, King Sigismund attempted to funnel the restless energy of the nobles into external wars. This, combined with other factors, led to the Commonwealth's official involvement in the Polish–Muscovite War, which followed the early Dimitriads and invasions (1605–1609).
The first rebellion in Polish history had sinister consequences. Royalty lost, to great extent, the moral prestige it had enjoyed... The Polish constitution was henceforth regarded as sacrosanct and the king had to renounce not only the idea of making any far-reaching changes in it, but even any reform.
— Oskar Halecki
Sigismund III Vasa