The Corpus Fontium Historiae Byzantinae (Latin: "Corpus of Byzantine history sources") or CFHB is an international project aiming to collect, edit and provide textual criticism on the historical sources from the time of the Byzantine Empire (4th–15th centuries AD). Its purpose is to make the works of Byzantine authors, especially those that had previously been unedited, available to modern research in an updated form. The project was launched at the 13th International Congress of Byzantine Studies in Oxford in 1966, and is under the auspices of the Association Internationale des Études Byzantines (AIEB) and its national branches.

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Each volume contains comments on the author, the surviving manuscripts as well as a translated and annotated version of the text. The original text is also frequently included, including facsimiles. The CFHB volumes are distinguished, according to their location of publication, in national series:

• Series Atheniensis (Athens)
• Series Berolinensis (Berlin)
• Series Bruxellensis (Brussels)
• Series Italica (Italy)
• Series Parisiensis (Paris)
• Series Thessalonicensis (Thessaloniki)
• Series Vindobonensis (Vienna)
• Series Washingtonensis (Washington D.C., Dumbarton Oaks)

• A Byzantine military handbook of the 6th/7th century:

Pseudo-Maurikios (Flavius Mauricius Tiberius): Strategicon, translated by Ernst Gamillscheg, ed. George T. Dennis, Vienna 1981 (CFHB Series Vindobonensis Vol. 17).

• The historical work of the Byzantine historiographer Agathias of Myrina (Asia Minor):

Agathias: Historiarium [The Histories], trans. by Joseph D. Frendo, Berlin 1975 (English translation, CFHB Series Berolinensis Vol. 2a).

• Corpus Scriptorum Historiae Byzantinae
• Monumenta Germaniae Historica