| State: | PR |
| Type: | PR |
| Route: | 805 |
| Length Km: | 7.3 |
| Direction A: | West |
| Terminus A: | in Negros |
| Junction: | in Negros–Palos Blancos |
| Direction B: | East |
| Terminus B: | in Palos Blancos |
| Municipalities: | Corozal |
| Previous Type: | Ter |
| Previous Route: | 803 |
| Next Type: | Ter |
| Next Route: | 806 |
Puerto Rico Highway 805 (PR-805) is an east–west road located in the municipality of Corozal in Puerto Rico. With a length of 7.3km (04.5miles), it extends from its intersection with PR-568 near the Cuchillas boundary, passing through Negros barrio until its junction with PR-803 in Palos Blancos area.
Puerto Rico Highway 805 is a rural road with a single lane per direction along its entire length. In Negros, it extends from its junction with PR-568 near Cuchillas to its intersection with PR-807, passing though several neighborhoods and sectors with scenic views of the northern coast of Puerto Rico. In Palos Blancos, PR-805 leaves PR-807 intersection until its end at PR-803 junction near the Monte Choca State Forest.
Prior to its numerical designation, PR-805 was only known as Spanish; Castilian: Camino de Negros. The current numerical designation corresponds to the 1953 Puerto Rico highway renumbering, a process implemented by the Puerto Rico Department of Transportation and Public Works (Spanish; Castilian: Departamento de Transportación y Obras Públicas) that increased the insular highway network to connect existing routes with different locations around Puerto Rico.