| Winner: | Sobeida Alejandra Fernández Reyes |
| Represented: | Valverde |
| Date: | January 24, 1970 |
| Venue: | Palacio de las Bellas Artes, Santo Domingo, Dominican Republic |
| Next Pageant: | Miss Universe 1970 |
| Debuts: | La Romana, María Trinidad Sánchez, Nueva Era (as Independencia) |
| Broadcaster: | Color Vision |
| Entrants: | 28 |
Señorita República Dominicana 1970 was held on January 24, 1970. There were 28 candidates who competed for the national crown. The winner represented the Dominican Republic at the Miss Universe 1970 . The Virreina al Miss Mundo will enter Miss World 1970 and Miss International 1971. Only the 27 province, 1 municipality entered. On the top 10 they showed their evening gown and answered questions so they could go to the top 5. In the top 5 they would answer more questions.