Stylianos Zaoutzes (Greek: Στυλιανὸς Ζαούτζης, but Ζαουντζᾶς in Skylitzes)[1] was a high Byzantine official of Armenian origin. Rising to high rank under Byzantine emperor Basil I (reigned 867–886), he then rose further to prominence under Basil's successor Emperor Leo VI the Wise (r. 886–912), who had a close friendship and possibly an affair with Stylianos's daughter Zoe Zaoutzaina. Stylianos Zaoutzes was Leo's leading minister during the first half of his reign, and was awarded the unique title of basileopator. His standing and influence declined after 895, but in 898, he became Leo's father-in-law when the Byzantine emperor married Zoe. He died in 899, in the same year as Zoe. Following an attempted coup by his relatives, the Zaoutzes clan was deprived of the considerable power it had amassed under Stylianos's tutelage.