Timeline of Byzantine Emperors: Chronological List From Constantine to 1453

The line of Byzantine emperors begins with Constantine I, yet the timeline is usually anchored to 330, when Constantinople was founded as the imperial capital. That small distinction matters. Constantine became emperor in 306, but the city he rebuilt turned the eastern Roman court into the center of a state that lasted until 1453.

One point should be clear from the start: these rulers did not call themselves Byzantine emperors. They called themselves emperors of the Romans. The word Byzantine is a later label, useful in English because it separates the medieval eastern empire from earlier Roman history without breaking the line of political continuity.

How this chronology is organized

This list uses the convention most readers expect. It includes sole rulers, senior co-rulers, and a few short-lived figures who truly held the capital or the imperial office. It leaves out most junior co-emperors who never rose above a secondary rank.

That choice matters because Byzantine succession was rarely neat. Sons, brothers, wives, regents, generals, palace factions, and city mobs could all shape the throne. Over time, overlapping reigns became normal rather than strange.

Before 395, several names in the list still belong to the wider Roman Empire, not yet to a fully separate eastern state.
After 1204, the imperial line continued in Nicaea, even though Constantinople was under Latin rule until 1261.
Highly debated edge cases such as Nicholas Kanabos or Constantine Laskaris are not placed in the main tables below.

Dynastic map of the Byzantine imperial line

A dynasty in Byzantium was never a guarantee. It was more like a temporary stretch of stability. Some houses held the throne for generations. Others lasted only long enough to prove how fragile the system could be.

Period	Dynasty or ruling phase	Years	What defines it
Late Roman foundation	Constantinian to Theodosian	306–457	Christian court culture, Constantinople’s rise, and the permanent eastern imperial center after 395.
Imperial consolidation	Leonid and Justinianic	457–610	Stronger court ritual, doctrinal conflict, fiscal reform, Justinian’s law code, and western reconquests.
Age of survival	Heraclian through Isaurian	610–802	War with Persia, Arab expansion, internal coups, and the first long cycle of iconoclasm.
Military recovery	Nikephorian, Amorian, Macedonian	802–1056	Administrative repair, cultural renewal, and a long territorial revival that peaked under Basil II.
Aristocratic strain	Doukas and transition	1059–1081	Court politics, frontier weakness, and the shock that followed Manzikert.
Komnenian recovery and decline	Komnenos and Angelos	1081–1204	Renewed military energy under the Komnenoi, followed by fiscal drift and the Fourth Crusade.
Last centuries	Laskaris and Palaiologos	1205–1453	Nicaean continuity, the recovery of Constantinople, civil wars, and the long Ottoman pressure that ended in 1453.

Chronological list of Byzantine emperors

The sequence below keeps the order strictly chronological. Where reigns overlap, that overlap is deliberate. Byzantium often had more than one crowned ruler at a time, but only one usually held the senior place.

From Constantine to Phocas

Emperor	Reign	House or phase	Brief note
Constantine I	306–337	Constantinian	Refounded Byzantium as Constantinople and pushed the empire onto a Christian course.
Constantius II	337–361	Constantinian	Ruled the East first, then the whole Roman Empire.
Julian	361–363	Constantinian	Last non-Christian emperor; died during the Persian campaign.
Jovian	363–364	Transition	Short reign that restored Christian imperial policy after Julian.
Valens	364–378	Valentinianic	Eastern emperor killed at Adrianople, one of late Roman history’s hardest defeats.
Theodosius I	379–395	Theodosian	Last emperor to rule the Roman Empire as a whole.
Arcadius	395–408	Theodosian	His reign began the enduring separation between East and West.
Theodosius II	408–450	Theodosian	Associated with the Theodosian Walls and the Theodosian Code.
Marcian	450–457	Transition	Backed the Council of Chalcedon and stabilized the court after Theodosius II.
Leo I	457–474	Leonid	First emperor crowned by the patriarch of Constantinople.
Leo II	474	Leonid	Child emperor who reigned only briefly.
Zeno	474–475; 476–491	Leonid	Lost the throne to Basiliscus, then returned and outlasted his enemies.
Basiliscus	475–476	Disputed interlude	Seized Constantinople before Zeno restored himself.
Anastasius I	491–518	Transition	Fiscal reformer whose careful rule left the treasury strong.
Justin I	518–527	Justinianic	Army officer turned emperor; opened the way for Justinian.
Justinian I	527–565	Justinianic	Hagia Sophia, Roman law codification, and western reconquests shaped his reign.
Justin II	565–578	Justinianic	Inherited Justinian’s state but faced renewed war and personal collapse.
Tiberius II Constantine	578–582	Justinianic	Rose from regent to emperor in Justin II’s final years.
Maurice	582–602	Justinianic	Soldier-emperor overthrown by a mutiny after long war on several fronts.
Phocas	602–610	Transition	His coup opened one of the empire’s darkest military crises.

From Heraclius to Michael III

Since its early years, the empire had survived pressure from Persians, Goths, and Huns. Under Heraclius and his successors, the pressure changed shape. The state became smaller, more Greek in language, and more visibly medieval in character.

Emperor	Reign	House or phase	Brief note
Heraclius	610–641	Heraclian	Won the war against Persia, then faced the first Arab conquests.
Constantine III	Feb–May 641	Heraclian	Reigned only a few months after Heraclius.
Heraklonas	May–Nov 641	Heraclian	Brief rule under the shadow of court faction and military anger.
Constans II	641–668	Heraclian	Tried to hold the empire together while Arab pressure grew.
Constantine IV	668–685	Heraclian	Held Constantinople against the Arab siege of 674–678.
Justinian II	685–695; 705–711	Heraclian	Lost the throne, returned from exile, and lost it again.
Leontios	695–698	Twenty Years’ Anarchy	Overthrew Justinian II during a violent cycle of coups.
Tiberios III	698–705	Twenty Years’ Anarchy	Took power after Leontios and fell when Justinian returned.
Philippikos	711–713	Twenty Years’ Anarchy	Short rule ended by military revolt.
Anastasios II	713–715	Twenty Years’ Anarchy	Tried to restore order and strengthen the capital’s defenses.
Theodosios III	715–717	Twenty Years’ Anarchy	A reluctant ruler displaced by Leo III.
Leo III	717–741	Isaurian	Saved Constantinople in 717–718 and began iconoclasm.
Artabasdos	741–743	Disputed interlude	Held Constantinople during a civil war against Constantine V.
Constantine V	741–775	Isaurian	Recovered the throne and strengthened the army.
Leo IV	775–780	Isaurian	Short reign between stronger and more famous rulers.
Constantine VI	780–797	Isaurian	Ruled first under Irene’s regency, then on his own.
Irene	797–802	Isaurian	Deposed her son and ruled in her own name.
Nikephoros I	802–811	Nikephorian	Fiscal reformer killed by the Bulgars at Pliska.
Staurakios	811	Nikephorian	Mortally wounded before he could settle the succession.
Michael I Rangabe	811–813	Nikephorian	Abdicated after defeat by Bulgaria.
Leo V	813–820	Amorian era	Restored iconoclasm before being murdered in church.
Michael II	820–829	Amorian	Founded a new ruling line after Leo V’s death.
Theophilos	829–842	Amorian	Last major iconoclast emperor.
Michael III	842–867	Amorian	His reign saw cultural renewal and the final end of iconoclasm.

From Basil I to Nikephoros III

The centuries after iconoclasm brought some of the empire’s strongest rulers. Over time, palace ritual became denser, provincial elites became more powerful, and the court learned again how to turn military success into prestige. Yet the same period also planted the tensions that later broke open in the eleventh century.

Emperor	Reign	House or phase	Brief note
Basil I	867–886	Macedonian	Founded the dynasty later tied to a long imperial recovery.
Leo VI	886–912	Macedonian	Known for legislation, scholarship, and elaborate court culture.
Alexander	912–913	Macedonian	Ruled for only a little over a year.
Constantine VII	913–959	Macedonian	Scholar-emperor whose early reign was dominated by regents and rivals.
Romanos I Lekapenos	920–944	Macedonian period	Senior emperor during much of Constantine VII’s reign.
Romanos II	959–963	Macedonian	Short reign before the great soldier-emperors of the tenth century.
Nikephoros II Phokas	963–969	Macedonian period	Brilliant general who pushed imperial frontiers deep into Syria.
John I Tzimiskes	969–976	Macedonian period	Seized power after Nikephoros II and campaigned in Bulgaria and the East.
Basil II	976–1025	Macedonian	Long reign that broke the Bulgarian Empire and marked a high point of imperial power.
Constantine VIII	1025–1028	Macedonian	Ruled alone only at the very end of his life.
Romanos III Argyros	1028–1034	Macedonian period	Entered the dynasty through marriage to Zoe.
Michael IV	1034–1041	Macedonian period	Rose from court life to the throne through marriage and factional support.
Michael V	1041–1042	Macedonian period	Deposed after trying to push Zoe aside.
Zoe and Theodora	Apr–Jun 1042	Macedonian period	The sisters ruled jointly for a short but memorable interlude.
Constantine IX Monomachos	1042–1055	Macedonian period	His reign saw the Great Schism and rising military strain.
Theodora	1055–1056	Macedonian period	Returned as sole ruler in old age.
Michael VI Bringas	1056–1057	Transition	A court choice swept away by military revolt.
Isaac I Komnenos	1057–1059	Transition	General-emperor whose reforms pointed toward Komnenian politics.
Constantine X Doukas	1059–1067	Doukas	A civil aristocrat whose reign weakened frontier defense.
Romanos IV Diogenes	1068–1071	Doukas period	Tried to rebuild the army, then fell after Manzikert.
Michael VII Doukas	1071–1078	Doukas	His troubled reign deepened the crisis after Manzikert.
Nikephoros III Botaneiates	1078–1081	Transition	Last ruler before the Komnenian takeover.

From Alexios I to Constantine XI

When Alexios I came to power, the empire looked battered but not finished. By the time Constantine XI died on the walls of Constantinople, the state had narrowed to a capital, a memory, and a political language of empire that still refused to disappear. As the centuries changed, the throne became less a seat of expansion and more a battle to preserve legitimacy under shrinking resources.

Emperor	Reign	House or phase	Brief note
Alexios I Komnenos	1081–1118	Komnenian	Rebuilt imperial power after decades of breakdown.
John II Komnenos	1118–1143	Komnenian	Extended the recovery with steady military pressure.
Manuel I Komnenos	1143–1180	Komnenian	Placed the empire back at the center of Mediterranean politics.
Alexios II Komnenos	1180–1183	Komnenian	Child ruler destroyed by the fight for the regency.
Andronikos I Komnenos	1183–1185	Komnenian	Seized power violently and fell just as violently.
Isaac II Angelos	1185–1195; 1203–1204	Angelos	Twice emperor, first by revolt and later through Crusader intervention.
Alexios III Angelos	1195–1203	Angelos	Weak rule that helped bring the Fourth Crusade to Constantinople.
Alexios IV Angelos	1203–1204	Angelos	Restored with Crusader backing, then overthrown.
Alexios V Doukas	Jan–Apr 1204	Angelos crisis	Last emperor in Constantinople before the Latin conquest.
Theodore I Laskaris	1205–1221	Laskaris of Nicaea	Built the main successor state after 1204.
John III Vatatzes	1221–1254	Laskaris of Nicaea	Expanded Nicaea and cornered the Latin Empire.
Theodore II Laskaris	1254–1258	Laskaris of Nicaea	Kept the Nicene state strong despite internal tension.
John IV Laskaris	1258–1261	Laskaris of Nicaea	Child emperor displaced by Michael VIII.
Michael VIII Palaiologos	1259–1282	Palaiologan	Recovered Constantinople in 1261 and restored the empire there.
Andronikos II Palaiologos	1282–1328	Palaiologan	Long reign marked by financial pressure and severe losses in Asia Minor.
Andronikos III Palaiologos	1328–1341	Palaiologan	Last emperor to recover large stretches of territory by force.
John V Palaiologos	1341–1376; 1379–1390; 1390–1391	Palaiologan	His repeated restorations mirror the empire’s internal instability.
John VI Kantakouzenos	1347–1354	Palaiologan civil war	Senior emperor during the settlement that followed civil war.
Andronikos IV Palaiologos	1376–1379	Palaiologan civil war	Deposed his father with outside backing.
John VII Palaiologos	1390	Palaiologan civil war	Held the throne in Constantinople for only a few months.
Manuel II Palaiologos	1391–1425	Palaiologan	Ruled a shrinking empire through diplomacy, travel, and endurance.
John VIII Palaiologos	1425–1448	Palaiologan	Sought western military support and church union against the Ottomans.
Constantine XI Palaiologos	1449–1453	Palaiologan	Died defending Constantinople on 29 May 1453.

What this timeline shows beyond the names

Succession was never automatic

Byzantine politics loved bloodline, but bloodline alone rarely settled anything. A son might inherit. A widow might rule. A general might march in from the provinces. A rival might be crowned in the capital while another emperor still lived. That is why the timeline contains restorations, overlaps, and reigns so short they look almost unreal.

Constantinople stayed central even when the empire did not

The throne was tied to the city more than to territory. A ruler who held Constantinople held more than walls, docks, and palaces. He held the ceremonial center of Roman legitimacy. Even after 1204, when the city was lost, the emperors at Nicaea claimed continuity not because they controlled the largest space, but because they claimed the same imperial office.

The empire changed shape without losing its political memory

The early emperors still look late Roman. The middle centuries feel unmistakably Byzantine: Greek-speaking, court-centered, deeply shaped by Christian theology, and more compact in territory. The late rulers governed a much smaller state, yet the title, ritual, and language of empire remained intact. That continuity is the thread that ties Constantine I to Constantine XI.

Read in order, the list is more than a chain of names. It is the record of a state that kept rewriting how Roman rule could look while refusing to admit that the story had ended, right up to the final morning when the last emperor disappeared into the fighting beneath the walls of Constantinople.

References

Wikipedia – List of Byzantine emperors
(direct chronological list of rulers, reign dates, and dynasty divisions)
Fordham University Internet History Sourcebooks – Byzantine Emperors: Dates
(compact date table for the eastern and later Byzantine imperial line)