| Şumuleul Mare | |
| Nagy-Somlyó | |
| River | |
| Countries | Romania |
|---|---|
| Region | Transylvania |
| Counties | Harghita County |
| Villages | Ciumani |
| Source | |
| - location | Gurghiu Mountains |
| Mouth | Mureş |
| - location | Ciumani |
| - coordinates | |
The Şumuleul Mare (also: Şomleul Mare, Hungarian: Nagy-Somlyó, Hungarian pronunciation:[’nɒɟ ʃomjoː]) is a small river in the Gurghiu Mountains, Harghita County, central Romania. It is a left tributary of the river Mureş. It flows through the municipality Ciumani, and joins the Mureş near the village Ciumani. It is fed by several smaller streams, including Bolo.