The Democratic Memory Law has been passed into the lawbooks, which has pardoned all victims of the Franco regeime who were sentenced on the grounds of political or religious beliefs.
As part of the legistlation, Spain will also promote the search and exhumations of victims buried in mass graves, which until now were handled by memory associations.
Estmates suggest around 114,000 civilians dissapeared during the Spanish Civil War and his dictatorship.
Family members of the victims have welcomed the bill, with many spending decades trying to clear the names of loved ones who were persecuted by the regieme.
Memory associations however have said that there is still some shortcomings, such as the ability to bring surviving perpetrators to justice.