The Democratic Solidarity Party (Partido Solidaridad Democrática) was a political liberal party in Cuba. Although changes to the Cuban constitution in 1992 decriminalized the right to form political parties other than the Communist Party of Cuba, these parties are not permitted to campaign or engage in any public political activities on the island. The Democratic Solidarity party described itself as "an organization from within Cuba promoting democracy and the respect for human rights by the peaceful route." The last President of the party was Fernando Sánchez López. The party was a full member of Liberal International.

It merged with the National Liberal Party of Cuba in February 2014 to form the Cuban Liberal Solidarity Party (Spanish: Partido Solidaridad Liberal Cubano, PSLC).

In February 2007 the following persons were elected to the national executive committee of PSD:

Provincial delegates