Gerasimus III of Constantinople

{{Short description|Ecumenical Patriarch of Constantinople from 1794 to 1797}}

{{Use dmy dates|date=January 2025}}

{{Infobox Patriarch

| name = Gerasimus III of Constantinople

| image =

| caption =

| patriarch_of = Ecumenical Patriarch of Constantinople

| enthroned = 3 March 1794

| ended = 19 April 1797

| province =

| diocese = Constantinople

| see = Ecumenical Patriarchate

| church = Church of Constantinople

| predecessor = Neophytus VII of Constantinople

| successor = Gregory V of Constantinople

| birth_name =

| birth_date =

| birth_place = Cyprus

| death_date = After 1797

| death_place = Tarabiye

| buried =

| religion = Eastern Orthodox Church

}}

Gerasimus III of Constantinople ({{langx|el|Γεράσιμος}}, Gerasimos; died after 1797) was Ecumenical Patriarch of Constantinople from 1794 to 1797.

He descended from Cyprus. In 1762, he was elected metropolitan bishop of Vize, in 1783 of İzmit, and in 1791 of Derkoi.{{Cite book |language=el |last=Χαμουδόπουλος |first=Μηνάς |url=https://books.google.com/books?id=7EkWAAAAYAAJ&pg=PA263 |title=Ekklēsiastikē alētheia |date=1882 |publisher=Patriarchikon Hidryma Paterikōn Meletōn}} On 3 March 1794, he was elected Ecumenical Patriarch, succeeding Neophytus VII of Constantinople.

During his patriarchy, Gerasimus III regulated many ecclesiastic issues. One of which was setting an age requirement in the ordainment of clerics in 1795, prohibiting the ordainment of deacon under 25 years old and presbyter under 30 years old.

On 19 April 1797, he resigned and retired to Tarabiye, where he died a while later.