| En Name: | Bomnak |
| Ru Name: | Бомнак |
| Coordinates: | 54.7167°N 179°W |
| Map Label Position: | top |
| Federal Subject: | Amur Oblast |
| Adm District Jur: | Zeysky District |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
Bomnak (Russian: Бомнак) is a rural locality (a selo) in Zeysky District of Amur Oblast, Russia, located on the northern bank of Zeya Reservoir.
A local road leads west to Gorny and Verkhnezeysk.
Bomnak has a dry-winter subarctic climate (Köppen climate classification Dwc) with dry, bitterly cold winters and warm, wet summers.