Hato Mayor del Rey is the capital of Hato Mayor Province, Dominican Republic. It is bordered on the North by the municipalities of El Valle and Sabana de la Mar, on the South by the San Pedro de Macorís Province, on the East by the El Seibo Province and on the West by the municipality of Bayaguana, Monte Plata. It is located 27 kilometers from the San Pedro de Macorís Province and 110 kilometers from the capital city of Santo Domingo.