This is a list of the treaties and agreements signed during the history of the Eastern Roman or Byzantine Empire

Byzantine Empire

The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

. The definition of a treaty is any agreement between the Byzantine Empire and any foreign power, including peace agreements,trade agreements, and understandings between the two powers. For external conflicts see Byzantine wars.

Justinian dynasty

Justinian Dynasty

The Justinian Dynasty is a family who ruled over the Byzantine Empire from 518 to 602. It originated with Justin I and ended with Maurice. Patriarch Germanus I of Constantinople , whose father was named Justinian, might have been a descendant of the dynasty...

 (518-602)

• Eternal Peace
  Eternal Peace (532)
  The Eternal Peace , signed in 532 between the East Roman Empire and Sassanid Persia, was a peace treaty of indefinite duration, which concluded the Iberian War between the two powers...
  
   (532), between the Byzantines and Sassanid Persia

Non-dynastic (711-717)

• Treaty of 716
  Treaty of 716
  The Treaty of 716 was an agreement between Bulgaria and the Byzantine Empire. It was signed by the son of the ruling Bulgarian Khan Tervel, Kormesiy and the Byzantine Emperor Theodosios III.- Background :...
  
   - Officially ends the Battle of Anchialus
  Battle of Anchialus (708)
  The Battle of Anchialus occurred in 708 near the town of Pomorie, Bulgaria .- Origines of the conflict :In 705, the Bulgarian Khan Tervel helped the ex-emperor of Byzantium, Justinian II to regain his throne after 10 years in exile...
  
   and establishes the borders between Byzantium and the Bulgarian Empire
  Bulgarian Empire
  Bulgarian Empire is a term used to describe two periods in the medieval history of Bulgaria, during which it acted as a key regional power in Europe in general and in Southeastern Europe in particular, rivalling Byzantium...
  
  .

Nikephoros' dynasty (802-813)

• Pax Nicephori
  Pax Nicephori
  Pax Nicephori is a term used to refer to both a 803 peace treaty allegedly concluded between the Frankish ruler Charlemagne and Nikephoros I, emperor of Byzantium, and the outcome of negotiations that took place between the same parties, but were concluded by different emperors, between 811 and 814...
  
   (803) peace treaty between Charlemagne
  Charlemagne
  Charlemagne was King of the Franks from 768 and Emperor of the Romans from 800 to his death in 814. He expanded the Frankish kingdom into an empire that incorporated much of Western and Central Europe. During his reign, he conquered Italy and was crowned by Pope Leo III on 25 December 800...
  
   and Nicephorus I

Laskarid dynasty (Empire of Nicaea, 1204-1261)

• Treaty of Nymphaeum (1214)
  Treaty of Nymphaeum (1214)
  The Treaty of Nymphaeum was a peace treaty signed in December of 1214 between the Nicaean Empire, successor state of the Byzantine Empire, and the Latin Empire, which was established in the aftermath of the Fourth Crusade of 1204.-Background:...
  
  
• Nicaean–Venetian Treaty of 1219
  Nicaean–Venetian Treaty of 1219
  The Nicaean–Venetian Treaty of 1219 was a trade and non-aggression defense pact signed between the Nicaean Empire and the Republic of Venice, in the form of an imperial chrysobull issued by Emperor Theodore I Lascaris...
  
  
• Nicaean-Latin Armistice of 1260
• Treaty of Nymphaeum (1261)
  Treaty of Nymphaeum (1261)
  The Treaty of Nymphaeum was a trade and defense pact signed between the Empire of Nicaea and the Republic of Genoa in Nymphaion in March of 1261...
  
  

Palaiologan Dynasty (1261-1453)

• Byzantine-Ottoman Treaty of 1403 – agreement that released the Byzantine Empire of vassalage to the Ottoman Empire and extensive territorial additions.