Germanus III of Constantinople
| Germanus III of Constantinople | |
|---|---|
| Ecumenical Patriarch of Constantinople | |
| Church | Church of Constantinople | 
| In office | 28 May 1265 – 14 September 1266 | 
| Predecessor | Arsenius de Constantinople | 
| Successor | Joseph I of Constantinople | 
| Personal details | |
| Born | Germanus | 
| Died | 1289 | 
| Denomination | Eastern Orthodoxy | 
Germanus III of Constantinople (Greek: Γερμανός; died 1289) was Ecumenical Patriarch of Constantinople (28 May 1265 – 14 September 1266). He attended the Second Council of Lyon in 1274 as the representative of Emperor Michael VIII Palaiologos.