| Country: | IRL |
| Type: | R |
| Image Notes: | N24 in Bansha, at junction with R663 |
| Route: | 663 |
| Length Km: | 23.7 |
| Terminus A: | N24 at Bansha, County Tipperary |
| Junction: |
|
| Terminus B: | R513 at Newtown, County Limerick |
| Previous Type: | R |
| Previous Route: | 662 |
| Next Type: | R |
| Next Route: | 664 |
The R663 road is a regional road in Ireland. It travels from the N24 road in Bansha, County Tipperary to the R513 in County Limerick, via the Glen of Aherlow and Galbally. The road is 23.7km (14.7miles) long.