| Saint Lidanus | |
| Birth Date: | 1026 |
| Death Date: | 1118 (aged 91–92) |
| Feast Day: | 2 July |
| Venerated In: | Roman Catholic Church |
| Birth Place: | Antinum, Italy |
| Death Place: | Monte Cassino, Italy |
| Canonized Date: | Pre-Congregation |
| Patronage: | Sezze, Italy |
Lidanus was a Benedictine abbot credited with draining the Pontine Marshes, Italy, and for founding[1] Sezze Abbey in the Papal States. He died at Monte Cassino, in 1118 of natural causes.[2]