The Powers and Responsibilities of Iran's Supreme Leader

The Supreme Leader is Iran's ultimate political and religious authority, holding absolute power over all major state policies and institutions.

By Garret Merkley · Explainer · Aug 11, 2026

Branched from How Guardianship of the Jurist Shaped Iran's Government

Quick take

The Supreme Leader is Iran's highest political and religious authority, serving for life.
This position holds ultimate power over all major state policies, military, judiciary, and media.
The Supreme Leader can overrule elected officials and institutions, including the President and Parliament.
The Assembly of Experts is responsible for appointing and theoretically overseeing the Supreme Leader, but its powers are limited.

The Supreme Leader is the most powerful figure in Iran, holding ultimate religious and political authority within the Islamic Republic. This position, established after the 1979 revolution, is rooted in the doctrine of Velayat-e Faqih, or the Guardianship of the Jurist, which posits that a leading Islamic jurist should govern the nation.

Ultimate Authority Over State Affairs

The Supreme Leader's powers are far-reaching and encompass all critical aspects of the state. As the Commander-in-Chief of the armed forces, they have final say on military and security matters, including declarations of war or peace. They also set the overall direction of both domestic and foreign policy, guiding the decisions of elected officials like the President and Parliament.

Crucially, the Supreme Leader appoints and dismisses many high-ranking officials. This includes the head of the judiciary, the chief of state media, the commanders of the Revolutionary Guard and the regular army, and members of powerful bodies like the Guardian Council and the Expediency Discernment Council. This broad appointment power ensures that key institutions align with the Supreme Leader's vision.

Oversight and Accountability (or Lack Thereof)

While theoretically overseen by the Assembly of Experts – a body of 88 high-ranking clerics elected by the public – the Supreme Leader effectively has the final word on almost all state matters. The Assembly of Experts is responsible for appointing the Supreme Leader and, theoretically, for monitoring their performance and even removing them if deemed unfit. However, in practice, the Supreme Leader's influence over the vetting of candidates for the Assembly itself, through the Guardian Council, significantly limits the Assembly's independence and ability to challenge the Leader.

Key Powers of the Supreme Leader

Commander-in-Chief of the Armed Forces
Sets overall domestic and foreign policies
Appoints and dismisses heads of judiciary, military, and state media
Approves presidential candidates vetted by the Guardian Council
Has final say on major national decisions

This position matters immensely because it is the linchpin of Iran's unique political system, dictating the country's trajectory in everything from human rights and economic policy to nuclear negotiations and regional influence. The Supreme Leader's decisions directly impact the daily lives of Iranians and shape Iran's relationship with the rest of the world, making it the most critical office to understand when studying Iranian politics.

Can the Supreme Leader be removed from power?

Theoretically, yes. The Assembly of Experts has the constitutional power to remove the Supreme Leader if they are deemed incapable of fulfilling their duties. However, this has never happened, and the Supreme Leader's influence over the vetting process for Assembly members makes such a scenario highly unlikely in practice.

How is the Supreme Leader different from the President of Iran?

The Supreme Leader holds ultimate authority over all state affairs and sets the overall direction of the country, while the President is the head of the executive branch, responsible for implementing the Supreme Leader's policies and managing day-to-day government operations. The President is elected but ultimately subservient to the Supreme Leader.

Who appoints the Supreme Leader?

The Supreme Leader is appointed by the Assembly of Experts, a body of high-ranking clerics who are themselves elected by the public. However, all candidates for the Assembly of Experts must first be vetted and approved by the Guardian Council, whose members are directly or indirectly appointed by the Supreme Leader.

How long does the Supreme Leader serve?

The Supreme Leader serves for life, or until they are deemed unable to fulfill their duties by the Assembly of Experts. This makes it a lifetime appointment, giving the position immense stability and long-term influence.

Sources

Constitution of the Islamic Republic of Iran
Council on Foreign Relations: Iran's Political System