| State: | PR |
| Type: | PR |
| Route: | 63 |
| Alternate Name: | Spanish; Castilian: Avenida William C. Dunscombe |
| Maint: | Puerto Rico DTPW |
| Length Km: | 0.60 |
| Direction A: | West |
| Terminus A: | in Sábalos–Mayagüez barrio-pueblo |
| Direction B: | East |
| Terminus B: | in Mayagüez barrio-pueblo |
| Municipalities: | Mayagüez |
| Previous Type: | PR |
| Previous Route: | 60 |
| Next Type: | Ter |
| Next Route: | 64 |
Puerto Rico Highway 63 (PR-63) originates at Highway 102 in Mayagüez and terminates 0.6 kilometers later at Puerto Rico Highway 2.[1] It is named the William C. Dunscombe Avenue.[2]