Independent Social Democratic Action

{{short description|Defunct social democratic party in Portugal}}

{{Infobox political party

| name = Independent Social Democratic Action

| logo =

| colorcode = #2E3191

| foundation = 1979

| ideology = Social democracy
Democratic socialism

| position = Center-left

| country = Portugal

| dissolved = 1985

| national = Republican and Socialist Front {{small|(1980–1983)}}

}}

The Independent Social Democratic Action ({{langx|pt|Ação Social Democrata Independente}}) was a political party in Portugal founded in 1979, having been officially established in June 1980. It was founded after several members of the Social Democratic Party (among them António Sousa Franco, Joaquim Magalhães Mota, Sérvulo Correia, Guilherme d'Oliveira Martins and António Marques Mendes).{{Cite web |date=2007-09-08 |title=...::CNE::... |url=http://www.cne.pt/index.cfm?sec=0506010200&PartidoID=40 |access-date=2024-03-04 |archive-date=2007-09-08 |archive-url=https://web.archive.org/web/20070908093228/http://www.cne.pt/index.cfm?sec=0506010200&PartidoID=40 |url-status=bot: unknown }}

The party contested the 1980 legislative election with the Socialist Party, being a part of the Republican and Socialist Front, that also included the Left-wing Union for the Socialist Democracy.{{Cite web |last=Almeida |first=São José |date=2018-09-09 |title=De condicionais a ASDI |url=https://www.publico.pt/2018/09/09/politica/noticia/de-condicionais-a-asdi-1843214 |access-date=2024-03-04 |website=PÚBLICO |language=pt}}

The party ended up being dissolved in 1985 and most of its members joined to the Socialist Party.{{Cite web |title=:::Jurisprudência Constitucional |url=https://www.pgdlisboa.pt/jurel/cst_main.php?ficha=8281&pagina=277&nid=2396 |access-date=2024-03-04 |website=www.pgdlisboa.pt}}