| Klenovnik | |
| Native Name: | Кленовник |
| Native Name Lang: | sr |
| Settlement Type: | Village |
| Pushpin Map: | Serbia |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Serbia |
| Subdivision Type1: | District |
| Subdivision Name1: | Braničevo |
| Subdivision Type2: | City |
| Subdivision Name2: | Požarevac |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Kostolac |
| Unit Pref: | Imperial |
| Population As Of: | 2002 |
| Population Total: | 904 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 44.6906°N 21.18°W |
Klenovnik (Serbian: Кленовник) is a village in the municipality of Kostolac, city of Požarevac, Serbia. According to the 2002 census, the village has a population of 904 people. It derives its name from Klen, a type of deciduous tree. Legend has it that the area was covered with a Klen forest, which was petrified, and resulted in a large deposit of coal. The thermo-electric power plant Kostolac is near Klenovnik, and is largely powered by the coal extracted from the nearby open-surface mines. Population of Klenovnik mainly shares in two occupations: agriculture and supporting industry for the nearby power plant. Klenovnik has a small school, grades K-4. Although it is a very small village it has city water, paved roads, and steam heating. Population is ethnically mainly Serbian.[1]