| Official Name: | Nizhny Katrukh |
| Native Name: | Нижний Катрух Ашағы Гатрух |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Dagestan#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Republic of Dagestan |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Rutulsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +3:00 |
| Coordinates: | 41.7333°N 59°W[1] |
Nizhny Katrukh (Russian: Нижний Катрух; Azerbaijani: Ашағы Гатрух, Aşağı Qatrux) is a rural locality (a selo) in Rutulsky District, Republic of Dagestan, Russia. Population: There are 4 streets.[2]
Nizhny Katrukh is located on the Samur ridge, near the Khirivalyu river, 35 km northwest of Rutul (the district's administrative centre) by road. Verkhny Katrukh and Arakul are the nearest rural localities.[3]
Azerbaijanis live there.