| Official Name: | Drenov Bok |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Pushpin Map Caption: | Location in Croatia |
| Pushpin Label Position: | bottom |
| Coordinates: | 45.2661°N 16.8281°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Croatia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Continental Croatia |
| Subdivision Type2: | County |
| Subdivision Name2: | Sisak-Moslavina |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Jasenovac |
| Unit Pref: | Metric |
| Area Footnotes: | [1] |
| Area Total Km2: | 17.8 |
| Elevation M: | 91 |
| Population As Of: | 2021 |
| Population Total: | 82 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 44324 Jasenovac |
| Area Code: | (+385) 44 |
Drenov Bok is a village in central Croatia, in the municipality of Jasenovac, Sisak-Moslavina County.
According to the 2011 census, the village of Drenov Bok has 82 inhabitants. This represents 36.94% of its pre-war population.
According to the 1991 census,[2] 89.64% of the village population were ethnic Croats (199/222), 2.70% were ethnic Serbs (6/222), and 7.66% were of other ethnic origin (17/222).