The theme of Iberia (Greek: θέμα Ἰβηρίας) was an administrative and military unit – theme – within the Byzantine Empire carved by the Byzantine Emperors out of several Georgian lands in the 11th century. It was formed as a result of Emperor Basil II’s annexation of a portion of the Bagrationi Dynasty domains (1000–1021) and later aggrandized at the expense of several Armenian kingdoms acquired by the Byzantines in a piecemeal fashion in the course of the 11th century. The population of the theme—at its largest extent—was multiethnic with a possible Georgian majority, including a sizable Armenian community of Chalcedonic rite to which Byzantines sometimes expanded, as a denominational name, the ethnonym "Iberian", a Graeco-Roman designation of Georgians. The theme ceased to exist in 1074 as