| Poienari | |
| Name Other: | Poenari |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Prahova County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Poienarii Burchii, Poienarii Apostoli, Gorgota |
| Length: | 15km (09miles) |
| Mouth: | Prahova |
| Mouth Location: | Gorgota |
| Mouth Coordinates: | 44.7945°N 26.1015°W |
| Basin Size: | 37km2 |
The Poienari or Poenari is a right tributary of the river Prahova in Romania. It discharges into the Prahova in Gorgota. Its length is 15km (09miles) and its basin size is 37km2.