Which Inca emperor was executed by Francisco Pizarro in 1533?

The Inca emperor executed by Francisco Pizarro in 1533 was Atahualpa.

Atahualpa, also written Atawallpa, emerged victorious from a civil war against his half-brother Huáscar shortly before the Spanish invasion. Their struggle followed the death of their father, Huayna Capac, whose reign had been followed by a devastating smallpox epidemic. Atahualpa controlled the northern part of the empire, centered around Quito, while Huáscar held the southern heartland around Cusco.

Francisco Pizarro and his Spanish force captured Atahualpa at Cajamarca in November 1532. Although Atahualpa offered a huge ransom of gold and silver, the Spanish kept him prisoner. After a Spanish trial, he was accused of rebellion, idolatry, conspiracy, and ordering Huáscar’s death. He was originally sentenced to burning, but accepted baptism and was instead strangled with a garrote on July 26, 1533.

Atahualpa is frequently described as the last Inca emperor, though later rulers—including Manco Inca—continued resistance or governed as Spanish-controlled successors. Huayna Capac was his father, not the emperor executed by Pizarro; Túpac Amaru belonged to a later generation of resistance.