| Sclessin | |
| Settlement Type: | Quarter of Liège |
| Image Map1: | Sclessin.svg |
| Map Caption1: | Location of Sclessin in Liège |
| Pushpin Map: | Belgium#Belgium Liège |
| Subdivision Type: | Country |
| Subdivision Type1: | Community |
| Subdivision Type2: | Region |
| Subdivision Type3: | Province |
| Subdivision Type4: | Arrondissement |
| Subdivision Name4: | Liège |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Liège |
| Coordinates: | 50.6097°N 5.5403°W |
| Population Density Km2: | auto |
| Postal Code Type: | Postal codes |
| Postal Code: | 4020 |
| Area Code: | 04 |
Sclessin (in French pronounced as /sklesɛ̃/) is a quarter of the city of Liège located in the province of Liège, Wallonia, Belgium. Before the fusion of the Belgian municipalities in 1977, it was a quarter of the municipality of Ougrée. On 1 January 1977, it was merged into Liège. Sclessin has never been a municipality, but in some sources, Sclessin is mentioned as a "section" (sub-municipality).[1]