Shia scholars are Islamic scholars who belong to the Shia school of thought, which is one of the two major branches of Islam. Shia scholars are known for their expertise in Islamic jurisprudence, theology, and history. They play a vital role in guiding the Shia community in matters of faith and practice.

Some of the most famous Shia scholars include Ayatollah Khomeini, Ayatollah Sistani, Ayatollah Khamenei, and Ayatollah Tabatabai. These scholars have made significant contributions to the development of Shia thought and have played a crucial role in shaping the Shia community's beliefs and practices.

For example, Ayatollah Khomeini was a prominent Shia scholar who played a pivotal role in the Iranian Revolution of 1979. He was known for his strong stance against the Shah of Iran and his advocacy for Islamic governance. His book, "Islamic Government," became a blueprint for the Islamic Republic of Iran's political system.

Another example is Ayatollah Sistani, who is considered one of the most influential Shia scholars today. He is known for his moderate views and his efforts to promote peace and stability in Iraq. He has also issued fatwas (religious edicts) on a wide range of issues, including politics, economics, and social justice.

Ayatollah Khamenei is another prominent Shia scholar who is the current Supreme Leader of Iran. He is known for his conservative views and his advocacy for Islamic unity and resistance against Western imperialism. He has also written extensively on Islamic jurisprudence and theology.

Finally, Ayatollah Tabatabai was a renowned Shia scholar who made significant contributions to the field of Islamic philosophy. His book, "The Principles of Philosophy and the Method of Realism," is considered a masterpiece of Islamic philosophy and has been translated into several languages.

In conclusion, Shia scholars play a critical role in guiding the Shia community in matters of faith and practice. They have made significant contributions to the development of Shia thought and have shaped the beliefs and practices of millions of Shia Muslims around the world.