This article contains a list of Encyclicals of Pope Leo XII. Leo XII issued 4 Papal Encyclicals during his reign as Pope:
| No. | Title (Latin) | Title (English translation) | Subject | Date |
|---|---|---|---|---|
| 1. | Ubi Primum | On Pope Leo's papacy; on the Bishops' duties | 5 May 1824 | |
| 2. | Quod Hoc Ineunte | Proclaiming the Jubilee of 1825 | 24 May 1824 | |
| 3. | Charitate Christi | Extension of the Jubilee to the entire church | 25 December 1825 | |
| 4. | Quanta Laetitia | About Scotland | 13 February 1827 |