| Aba | |
| Pushpin Map: | Russia |
| Pushpin Map Caption: | Mouth |
| Mouth: | Tom |
| Mouth Coordinates: | 53.7744°N 87.137°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 71km (44miles) |
| Basin Size: | 867km2 |
The Aba (Russian: река Аба) is a river in Russia; a left tributary of the Tom. It flows across the steppes, and merges with the Tom near Novokuznetsk. It is long, and has a drainage basin of . There are coal deposits in the river's basin. The Aba people live in the river's vicinity.