Kyriakos 11 | Prosopography of the Byzantine Empire |
| Floruit | M VII |
| Dates | 645 (taq) / 646 (tpq) |
| PmbZ No. | 1189 |
| Variant Names | Cyriacus |
| Religion | Anti-monothelete |
| Locations | Byzacena; Rome; Byzacena (officeplace) |
| Occupation | Bishop |
| Titles | Bishop, unknown (Byzacena) (office) |
| Textual Sources | Lateran Council = Concilium Lateranense anno 649 celebratum, ed. R. Riedinger, ACO II 1 (Berlin, 1984) (conciliar) |
Kyriakos 11 was the bishop of a see in Byzacena whose name is lost; in 645/646 he subscribed the letter sent from the bishops of Byzacena to the emperor Constans II (Konstans 1) asking him to persuade the patriarch of Constantinople, Paulos 2, to abandon the monothelete heresy; the letter was read out at the Lateran Council in October 649; in the list of signatures his name appears thirty-first: Conc. Lat., p. 79, line 12 ("
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