| Honorific-Prefix: | His All Holiness |
| Athanasius V | |
| Patriarch Of: | Ecumenical Patriarch of Constantinople |
| Enthroned: | 1709 |
| Ended: | 4 December 1711 |
| Diocese: | Constantinople |
| See: | Ecumenical Patriarchate |
| Church: | Church of Constantinople |
| Predecessor: | Cyprianus |
| Successor: | Cyril IV |
| Birth Date: | unknown |
| Birth Place: | Crete |
| Death Date: | after 1711 |
| Religion: | Eastern Orthodox Church |
| Occupation: | Ecumenical Patriarch |
Athanasius V (Greek: Ἀθανάσιος; died after 1711) served as Ecumenical Patriarch during the period 1709–1711.
He descended from Crete. He studied in Halle, Saxony and was distinguished for his wide education, multilingualism (Latin, Arabic) and deep knowledge of ecclesiastic music. Firstly, he was elected Metropolitan bishop of Veliko Tarnovo and then, in 1692, of Edirne.
After Cyprianus of Constantinople's deposition and exile to Mount Athos, Cyril, metropolitan bishop of Cyzicus, was elected Patriarch, but after the intervention of the Grand Vizier Çorlulu Ali Pasha, Athanasius V became Patriarch. During his reign, he was suspected of pro-Catholic tendencies.[1]
On 4 December 1711, he was deposed, and Cyril IV of Constantinople was restored to the throne. Then, he dedicated himself to studying until his death. He made great work in the domain of ecclesiastic music.