| Pelegrín Horacio Castillo Semán | |
| Office: | Minister of Energy and Mines of the Dominican Republic |
| Termstart: | April 2014 |
| Termend: | 16 August 2020 |
| Predecessor: | Office created |
| Successor: | Antonio Almonte |
| Birth Date: | 22 April 1956 |
| Birth Place: | San Francisco de Macorís, Dominican Republic |
| Office1: | Member of the Chamber of Deputies of the Dominican Republic |
| Termstart1: | August 22, 1994 |
| Termend1: | August 22, 2014 |
| Father: | Vincho Castillo |
| Mother: | Sogela Semán |
| Relations: | (brother) |
Pelegrín Horacio Castillo Semán (born April 22, 1956) is a Dominican politician. He was the first to be Minister of Energy and Mines of the Dominican Republic; he was in office from April 2014 to 16 August 2020.[1] He was elected deputy in 2010 for a period of 6 years, but in 2014 he resigned to take over as Minister of Energy and Mines.[2] In 2012, he was candidate for the presidential election of that year in the Dominican Republic. He also ran for president in the presidential elections of 2016.[3]