| NGC 6756 | |
| Epoch: | J2000 |
| Class: | Open cluster |
| Dist Ly: | 6,363 ly |
| Dist Pc: | 1,951 pc |
| Appmag V: | 10.6 |
| Size V: | 4.0′ |
| Constellation: | Aquila |
| Names: | Cr 398, C1906+046, OCISM 20, OLC 99. |
NGC 6756 is a small open star cluster in the constellation Aquila, close to NGC 6755.