Mehmed IV (1648–1687) succeeds Ibrahim I (1640–1648) as Ottoman sultan.

Mehmed IV, nicknamed as Mehmed the Hunter, was the sultan of the Ottoman Empire from 1648 to 1687. He came to the throne at the age of six after his father was overthrown in a coup. Mehmed went on to become the second-longest-reigning sultan in Ottoman history after Suleiman the Magnificent. While the initial and final years of his reign were characterized by military defeat and political instability, during his middle years he oversaw the revival of the empire's fortunes associated with the Köprülü era. Mehmed IV was known by contemporaries as a particularly pious ruler, and was referred to as gazi, or "holy warrior" for his role in the many conquests carried out during his long reign.

Ibrahim was the sultan of the Ottoman Empire from 1640 until 1648.

The sultans of the Ottoman Empire, who were all members of the Ottoman dynasty, ruled over the transcontinental empire from its perceived inception in 1299 to its dissolution in 1922. At its height, the Ottoman Empire spanned an area from Hungary in the north to Yemen in the south and from Algeria in the west to Iraq in the east. Administered at first from the city of Söğüt since before 1280 and then from the city of Bursa since 1323 or 1324, the empire's capital was moved to Adrianople in 1363 following its conquest by Murad I and then to Constantinople in 1453 following its conquest by Mehmed II.