| Nirajul Mare | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Mureș County |
| Length: | 14km (09miles) |
| Source1: | Gurghiu Mountains |
| Mouth: | Niraj |
| Mouth Location: | Câmpu Cetății |
| Mouth Coordinates: | 46.6742°N 25.0194°W |
| Basin Size: | 39km2 |
The Nirajul Mare is the right headwater of the river Niraj in Romania. It joins the Nirajul Mic in the village of Câmpu Cetății to form the Niraj. Its length is 14km (09miles) and its basin size is 39km2.