Jasenov (Hungarian: Jeszenő, Rusyn: Ясенів) is a village and municipality in the Sobrance District in the Košice Region of east Slovakia.

In historical records the village was first mentioned in 1279. Before the establishment of independent Czechoslovakia in 1918, Jasenov was part of Ung County within the Kingdom of Hungary. In 1939, it was for a short time part of the Slovak Republic. As a result of the Slovak–Hungarian War of 1939, it was again part of Hungary from 1939 to 1944. In the autumn of 1944, the Red Army entered Jasenov and it was once again part of Czechoslovakia.

The village lies at an altitude of 174 metres and covers an area of 7.213 km². It has a population of 314 people (2005).

The village has a public library, and a football pitch.

• List of municipalities and towns in Slovakia

The records for genealogical research are available at the state archive "Statny Archiv in Presov, Slovakia"

• Greek Catholic church records (births/marriages/deaths): 1880–1919 (parish A)

• https://web.archive.org/web/20070513023228/http://www.statistics.sk/mosmis/eng/run.html
• https://web.archive.org/web/20160328003421/http://en.e-obce.sk/obec/jasenov-kosice/jasenov.html
• http://www.obecjasenov.sk
• Surnames of living people in Jasenov

48°48′N 22°10′E / 48.800°N 22.167°E / 48.800; 22.167