Miss República Dominicana 1979 was held on 1978-12-20 at the Carnival of the Hyatt Hotel Fair in Santo Domingo, República Dominicana, with 28 contestants. The winner represented República Dominicana at Miss Universe 1979 and the Señorita República Dominicana Mundo titleholder went to Miss World 1979; other semifinalists competed in various international pageants. The event was broadcast by Color Visión Channel 9.