The Party of Democratic Action (Stranka Demokratske Akcije) is a Bosniak national political party in Bosnia and Herzegovina. It was founded in 1990 by Alija Izetbegović, Muhamed Filipović and Fikret Abdić. The party was the first Bosniak party of national orientation in Yugoslavia since the banning of the multiparty system in 1945 by the Communist Yugoslav Leadership.

It achieved considerable success in elections after the fall of Communism in the early 1990s. It founded the newspaper Ljiljan. The party remains the strongest political party among the Bosniak population in Bosnia and Herzegovina, and it has branches in Croatia and Serbia (Sandžak region).

The party is an observer member of the European People's Party (EPP).

At the last legislative elections, 1 October 2006, the party won the following posts;

• 9 out of 42 seats in the House of Representatives of Bosnia and Herzegovina.
• 28 out of 98 seats in the House of Representatives of the Federation of Bosnia and Herzegovina
• 3 out 83 in the National Assembly of the Republic of Srpska.
• 1 out of 2 Vice Presidential seats in Republika srpska.
• 4 out of 83 seats in the National Assembly of the Republic of Srpska.
• 13 out of 35 seats in the assembly of the Zenica-Doboj Canton
• 12 out of 35 seats in the assembly of the Tuzla Canton
• 12 out of 30 seats in the assembly of the Una-Sana Canton
• 10 out of 35 seats in the assembly of the Sarajevo Canton
• 9 out of 25 seats in the assembly of the Bosnian Podrinje Canton
• 8 out of 30 seats in the assembly of the Central Bosnia Canton
• 6 out of 30 seats in the assembly of the Herzegovina-Neretva Canton
• 2 out of 21 seats in the assembly of the Posavina Canton
• 2 out of 10 seats in the assembly of Canton 10
• The party won none of the 23 seats in the assembly of West Herzegovina Canton