Grekio suferis invadojn el [[Heruloj]], [[Gotoj]], kaj [[Vandaloj]] dum la regado de Romulus Augustulus. [[Stiliko]], kiu agadis kiel regento por [[Flavio Arkadio|Arkadio]], senloĝigis Tesalion kiam la [[Visigotoj]] invadis fine de la 4a jarcento. La [[ĉambelano]] de Arkadio nome Eŭtropio permesis al [[Alariko la 1-a|Alariko]] eniri en Grekion, kaj fakte li rabadis Atenon, Korinton kaj la [[Peloponezo]]n. Stiliko eventuale forigis lin ĉirkaŭ 397 kaj Alariko fariĝis ''magister militum'' (militestro) en [[Iliriko]]. Eventuale, Alariko kaj la Gotoj migris al Italio, rabadis Romon en 410, kaj konstruis la [[Regno Visigota|Visigotan Regnon]] en [[Iberia Duoninsulo|Iberion]], kio daŭris ĝis 711 pro la alveno de la [[Araboj]].
Grekio restis parto de la relative unuigita orienta duono de la imperio,
which eventually became the center of the remaining Roman Empire, the Eastern Roman or [[ Byzantine Empire]]. Contrary to outdated visions of [[ Late Antiquity]], the Greek peninsula was most likely one of the most prosperous regions of the Roman Empire. Older scenarios of poverty, depopulation, barbarian destruction and civil decay have been revised in light of recent archaeological discoveries.<ref name=corinth>Rothaus, p. 10. "The question of the continuity of civic institutions and the nature of the ''polis'' in the late antique and early Byzantine world have become a vexed question, for a variety of reasons. Students of this subject continue to contend with scholars of earlier periods who adhere to a much-outdated vision of late antiquity as a decadent decline into impoverished fragmentation. The cities of late-antique Greece displayed a marked degree of continuity. Scenarios of barbarian destruction, civic decay, and manorialization simply do not fit. In fact, the city as an institution appears to have prospered in Greece during this period. It was not until the end of the 6th century (and maybe not even then) that the dissolution of the city became a problem in Greece. If the early sixth century ''Syndekmos'' of Hierokles is taken at face value, late-antique Greece was highly urbanized and contained approximately eighty cities. This extreme prosperity is born out by recent archaeological surveys in the Aegean. For late-antique Greece, a paradigm of prosperity and transformation is more accurate and useful than a paradigm of decline and fall."</ref> In fact the [[polis]], as an institution, appears to have remained prosperous until at least the sixth century. Contemporary texts such as Hierokles' ' 'Syndekmos'' affirm that Late antiquity Greece was highly urbanised and contained approximately 80 cities.<ref name=corinth/> This view of extreme prosperity is widely accepted today, and it is assumed between the 4th and 7th centuries AD, Greece may have been one of the most economically active regions in the eastern [[ Mediterranean]].<ref name=corinth/>