| Joncherey | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Joncherey (Territoire-de-Belfort).svg |
| Coordinates: | 47.5297°N 7.0019°W |
| Insee: | 90056 |
| Postal Code: | 90100 |
| Arrondissement: | Belfort |
| Canton: | Delle |
| Mayor: | Jacques Alexandre[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Sud Territoire |
| Elevation Min M: | 349 |
| Elevation Max M: | 401 |
| Area Km2: | 5.18 |
Joncherey (in French pronounced as /ʒɔ̃ʃʁɛ/) is a commune in the Territoire de Belfort department in Bourgogne-Franche-Comté in northeastern France.
The first fatalities on the Western Front of World War I occurred in this village on 2 August 1914 at 9:59 am, one day before the formal declaration of war between Germany and France. French corporal Jules André Peugeot was stationed in the village of Joncherey, southeast of Belfort, when he challenged a German army patrol, which had crossed the border few hours earlier. Peugeot commanded the Germans to stop and declared them under arrest. In response, the German officer commanding the patrol, Albert Mayer, pulled out his revolver and fired, hitting Peugeot in the shoulder. Despite his wound, Peugeot fired with his pistol at Mayer but missed. Peugeot's comrades then fired repeatedly at Mayer, shooting him first in the stomach and then in the head, killing him. Peugeot, severely wounded, returned to his billet, where he died from his injuries at 10:37 am.
Joncherey has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Joncherey is . The average annual rainfall is with December as the wettest month. The temperatures are highest on average in July, at around, and lowest in January, at around . The highest temperature ever recorded in Joncherey was on 7 August 2015; the coldest temperature ever recorded was on 7 January 1985.