| Official Name: | Jurisdicción de San Zadornil |
| Postal Code Type: | Postal code |
| Postal Code: | 01427 |
| Area Total Km2: | 30 |
| Elevation M: | 658 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Website: | http://www.jurisdicciondesanzadornil.es/ |
Jurisdicción de San Zadornil (pronounced as /es/) is a municipality located in the province of Burgos, Castile and León, Spain. According to the 2004 census (INE), the municipality has a population of 110 inhabitants.
The Jurisdicción de San Zadornil is made up of four towns: San Zadornil (seat or capital), Arroyo de San Zadornil, San Millán de San Zadornil and Villafría de San Zadornil.
San Millán de San Zadornil is the site of one of the combats that led to the Anglo-Allied victory at the Battle of San Millan-Osma in the Peninsular War.