| Official Name: | Dolga Poljana |
| Pushpin Map: | Slovenia |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Slovenia |
| Subdivision Type: | Country |
| Subdivision Name: | Slovenia |
| Subdivision Type1: | Traditional region |
| Subdivision Name1: | Inner Carniola |
| Subdivision Type2: | Statistical region |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Ajdovščina |
| Area Total Km2: | 2.31 |
| Population As Of: | 2020 |
| Population Total: | 381 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 45.8759°N 13.9359°W |
| Elevation M: | 155.8 |
| Footnotes: | [1] |
Dolga Poljana (in Slovenian pronounced as /ˈdoːu̯ɡa pɔˈljaːna/, German: Langenfeld[2]) is a village in the Vipava Valley east of Ajdovščina in the traditional Inner Carniola region of Slovenia.[2] It is now generally regarded as part of the Slovenian Littoral.[3]
A stone arch bridge over the Vipava River links Dolga Poljana to the village of Dolenje. The three-arch bridge was built in the 19th century. It is paved with gravel and is supported by buttresses that are reinforced with groynes on the upstream side. There is a low stone wall on both sides of the bridge, and a shrine with a semi-circular niche once stood at it.[4]