Progressive Democratic Party (; PDP) was a Spanish conservative political party, founded in 1978. The main leader of the PDP was Alfonso Osorio, who was elected as MP in the elections of 1979.
The party was a member of the Democratic Coalition, led by Manuel Fraga Iribarne.
On 13 September 1979 Osorio resigned as the party president, being replaced by Gabriel Camuñas SolÃÂs. The party joined People's Alliance on 30 June 1980.