| Official Name: | Chernechchyna |
| Native Name: | Чернеччина |
| Native Name Lang: | uk |
| Settlement Type: | village |
| Pushpin Map: | Ukraine Sumy Oblast#Ukraine |
| Pushpin Map Caption: | Location of Chernechchyna in Sumy Oblast##Location of Chernechchyna in Ukraine |
| Coordinates: | 50.3064°N 34.8086°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Oblast |
| Subdivision Type2: | Raion |
| Subdivision Name2: | Okhtyrka Raion |
| Subdivision Type3: | Hromada |
| Subdivision Name3: | Chernechchyna rural hromada |
| Established Title: | Established |
| Established Date: | 17th century |
| Population: | 1,746 |
Chernechchyna (Ukrainian: Чернеччина; Russian: Чернетчина|translit=Chernetchina) is a village in Okhtyrka Raion, in Ukraine's central Sumy Oblast. It is the administrative centre of Chernechchyna rural hromada, one of the hromadas of Ukraine. Its population is 1,746 .[1]
Chernechchyna was established in the late 17th century by serfs subjugated under the,[2] which had itself been established in 1654 after the destruction of another monastery. The Holy Trinity Monastery was closed in 1917 following the October Revolution, being re-consecrated in 2003.[3]
Among the primary sources of income for residents of Chrnechchyna are agriculture, forestry, and mining. Ukrnafta's largest oil refinery, as well as Ukraine's largest oil refinery, is located near the village, as is the Hetman National Nature Park.[2] A mass grave of Soviet soldiers who died during World War II is also in the village.[4]
During the Russian invasion of Ukraine, a humanitarian aid centre was established by the United Nations in Chernechchyna.[5]