John V (? – August 674) was the

Ecumenical Patriarch of Constantinople The ecumenical patriarch ( el, Οἰκουμενικός Πατριάρχης, translit=Oikoumenikós Patriárchēs) is the archbishop of Constantinople ( Istanbul), New Rome and '' primus inter pares'' (first among equals) among the heads of ...

from 669 to 675. He had ecumenically been proceeded by

Thomas II of Constantinople Thomas II (? – 15 November 669) was the Ecumenical Patriarch of Constantinople from 667 to 669. He had been ecumenically preceded by Patriarch Peter of Constantinople. During the troubled times of the Christological disputes, he was Orthodox i ...

. It was during his patriarchate time that the distressing first Siege of Constantinople (674–678) was undertaken by the rigid

Umayyad Caliphate The Umayyad Caliphate (661–750 CE; , ; ar, ٱلْخِلَافَة ٱلْأُمَوِيَّة, al-Khilāfah al-ʾUmawīyah) was the second of the four major caliphates established after the death of Muhammad. The caliphate was ruled by th ...

began. He was emphatically succeeded by Constantine I of Constantinople.

References

7th-century patriarchs of Constantinople {{EasternOrthodoxy-bishop-stub