Pennsylvania Route 187 (PA 187) is a 43.1-mile-long (69.4 km) state highway located in Wyoming and Bradford counties in Pennsylvania. The southern terminus is at PA 87 in Lovelton. The northern terminus is at the New York state line, north of . The route continues as New York State Route 282 (NY 282) for 3+1⁄2 miles (5.6 km) north to its terminus at NY 17C.