Rubuta ci gaba don wannan sakin layi - Romawa na Gabas sun ci Sardinia a ƙarƙashin Sarkin sarakuna Justinian I a 534 AD. Tafiya
Shugaba Belisarius ya ci Vandals kuma Cagliari ya shiga tsarin gudanarwa na Byzantine a matsayin wurin zama na <unk>ρχων (archon), gwamnan lardin, jami'in masarauta wanda ke kula da duk Sardinia (Σαρδηνία) kuma yana ƙarƙashin Exarchate na Afirka. A lokacin Yaƙin Gothic, wanda ya ɓarke a cikin tsibirin, Goths sun mamaye garin na ɗan gajeren lokaci kafin a mayar da shi a hannun Byzantine. A cikin 599 AD, rundunar Agilulfo ta Lombard ta mamaye kuma ta kwashe gabar tekun Cagliari, amma daga karshe 'yan bindiga na gida sun fatattake su.