| State: | PR |
| Type: | PR |
| Route: | 42 |
| Alternate Name: | Spanish; Castilian: Calle Las Palmas[1] |
| Maint: | Puerto Rico DTPW |
| Length Km: | 1.0 |
| Direction A: | West |
| Terminus A: | in Santurce |
| Junction: | in Santurce |
| Direction B: | East |
| Terminus B: | Calle Lafayette in Santurce |
| Municipalities: | San Juan |
| Previous Type: | Ter |
| Previous Route: | 41 |
| Next Type: | Ter |
| Next Route: | 47 |
Puerto Rico Highway 42 (PR-42) is an urban road in Santurce. This is a short road that connects from the PR-39 (Calle Cerra) to Calle Lafayette and intersects with PR-2. It is parallel to the PR-35 (Avenida Manuel Fernández Juncos) and PR-25 (Avenida Juan Ponce de León). This road is called Spanish; Castilian: Calle Las Palmas.[2]