| Orientalis ecclesiae | |
| Language Of Title: | Latin |
| Translation Of Title: | Of the Eastern Church |
| Pope: | Pius XII |
| Papal Coats Of Arms: | C o a Pius XII.svg |
| Signature Date: | 9 April 1944 |
| Subject: | On St. Cyril, Patriarch of Alexandria |
| Number: | 6 of 41 |
| Web La: | https://www.vatican.va/content/pius-xii/la/encyclicals/documents/hf_p-xii_enc_19440409_orientalis-ecclesiae.html |
| Web En: | https://www.vatican.va/content/pius-xii/en/encyclicals/documents/hf_p-xii_enc_09041944_orientalis-ecclesiae.html |
| Before: | Divino Afflante Spiritu |
| After: | Communium Interpretes Dolorum |
Orientalis Ecclesiae is an encyclical issued by Pope Pius XII on 9 April 1944. It celebrates the life and work of St. Cyril, Patriarch of Alexandria on the occasion of the fifteenth centenary of his death.