PR1

PR1 or PR-1 may refer to:


 * Polskie Radio Program I, a radio channel broadcast by the Polish public broadcaster Polskie Radio
 * the first group of plant pathogenesis-related proteins
 * the first of three categories of para-rowing, also known as adaptive rowing
 * VR Class Pr1, a Finnish locomotive
 * Puerto Rico Highway 1, a road connecting the city of Ponce to San Juan