| Krosna | |
| Settlement Type: | Town |
| Pushpin Map: | Lithuania |
| Coordinates: | 54.3778°N 23.5306°W |
| Pushpin Map Caption: | Location of Krosna |
| Subdivision Type: | Country |
| Subdivision Type1: | Ethnographic region |
| Subdivision Name1: | Dzūkija |
| Subdivision Type2: | County |
| Subdivision Name2: | Alytus County |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Lazdijai district municipality |
| Subdivision Type4: | Eldership |
| Subdivision Name4: | Krosna eldership |
| Subdivision Type6: | Capital of |
| Subdivision Name6: | Krosna eldership |
| Established Date: | 1602 |
| Established Title: | First mentioned |
| Population Footnotes: | [1] |
| Population Total: | 244 |
| Population As Of: | 2021 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
Krosna is a town in Lazdijai district municipality in eastern Lithuania, located 18 km away from Lazdijai. The etymology of the town's name may come from water, specifically from Krosna river.[2]