Puerto Rico Highway 131 (PR-131) is a road located in Adjuntas, Puerto Rico. It begins at its intersection with PR-135 in Barrio Yayales and ends at Guilarte Forest near Peñuelas municipal limit. Its segment between PR-525 and PR-518 is part of the Ruta Panorámica.
Puerto Rico Highway 3131 (PR-3131) is a rural road that branches off from PR-132 in eastern Guayanilla and ends near Sector Malpaso in Peñuelas.