Bešenovački Prnjavor (Serbian Cyrillic: Бешеновачки Прњавор) is a village in Serbia. It is situated in the Sremska Mitrovica municipality, in the Syrmia District, Vojvodina province. The village has a Serb ethnic majority and it is the smallest village in the municipality - its population numbering 145 people (2002 census). Near the village is Bešenovo monastery, one of 16 Serb Orthodox monasteries on Fruška Gora mountain.
In Serbian, the village is known as Bešenovački Prnjavor (Бешеновачки Прњавор), in Croatian as Bešenovački Prnjavor, and in Hungarian as Besenyőmonostor.
- 1981: 150
- 1991: 140
- 2002: 145
- Slobodan Ćurčić, Broj stanovnika Vojvodine, Novi Sad, 1996.
Coordinates: 45°07′N 19°42′E / 45.117°N 19.700°E