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.

Guerrilla warfare is a form of unconventional warfare in which small groups of irregular military, such as rebels, partisans, paramilitary personnel or armed civilians including recruited children, use ambushes, sabotage, terrorism, raids, petty warfare or hit-and-run tactics in a rebellion, in a violent conflict, in a war or in a civil war to fight against regular military, police or rival insurgent forces.