The Second Dominican Republic was a predecessor of the Dominican Republic and began with the restoration of the country in 1865 and culminated with the American intervention in 1916.

The Dominican Restoration War or the Dominican War of Restoration was a guerrilla war between 1863 and 1865 in the Dominican Republic between nationalists and Spain, the latter of which had recolonized the country 17 years after its independence. The war resulted in the restoration of Dominican sovereignty, the withdrawal of Spanish forces, the separation of the Captaincy General of Santo Domingo from Spain, and the establishment of a second republic in the Dominican Republic.