| 2nd Yeltsovka | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Subdivision Type3: | Region |
| Subdivision Name3: | Novosibirsk Oblast |
| Length: | 14km (09miles) |
| Mouth: | Ob |
| Mouth Coordinates: | 55.0449°N 82.8541°W |
The 2nd Yeltsovka (Russian: 2-я Ельцовка) is a small river in Novosibirsk Oblast, Russia, right tributary of the Ob. Its length is 14 km (8.7 mi), with a drainage basin of 42 square kilometres.
The 2nd Yeltsovka flows out of a small lake at the village of Klyukvenny, runs southwest through Novosibirsky District, then Kalininsky and Zayeltsovsky districts of Novosibirsk, flows into the Ob.