The ispán or count was the leader of a castle district in the Kingdom of Hungary from the early 11th century. Most of them were also heads of the basic administrative units of the kingdom, called counties, and from the 13th century the latter function became dominant. The ispáns were appointed and dismissed by either the monarchs or a high-ranking royal official responsible for the administration of a larger territorial unit within the kingdom. They fulfilled administrative, judicial and military functions in one or more counties.

A perpetual count was a head or an ispán of a county in the Kingdom of Hungary whose office was either hereditary or attached to the dignity of a prelate or of a great officer of the realm. The earliest examples of a perpetual ispánate are from the 12th century, but the institution flourished between the 15th and 18th centuries. Although all administrative functions of the office were abolished in 1870, the title itself was preserved until the general abolition of noble titles in Hungary in 1946.