Prefect of Bajor was a Cardassian title for the individual who oversaw the Occupation of Bajor.
Legate Migar was Prefect in the 2340s. (DS9 - Rebels novels: The Conquered, The Courageous, The Liberated)
Dukat became Prefect in the 2340s and held the position until the end of the Occupation. (DS9 episode: "Emissary")