The President of the Ottoman Empire during the Battle of Vienna, which took place in 1683, was Kara Mustafa Pasha. He was a prominent military commander and statesman who served as the Grand Vizier of the Ottoman Empire from 1676 until his execution in 1683 following the defeat at the Battle of Vienna.
Kara Mustafa Pasha was responsible for leading the Ottoman army in the siege of Vienna, which was a key moment in the long-standing conflict between the Ottoman Empire and Europe. Despite initial successes, the Ottoman forces were eventually defeated by a coalition of European armies led by King Jan III Sobieski of Poland. The battle marked a turning point in the history of the Ottoman Empire and is considered one of the most significant events of the 17th century.