The Progressive Party (Korean: 진보당), known as the Minjung Party until June 2020, is a left-wing progressive and nationalist political party in South Korea. The party was formed by the merger of the New People's Party and People's United Party on 15 October 2017.

The Korean Social Democratic Party (KSDP) is a political party in North Korea that is allied with the ruling Workers' Party of Korea (WPK). It was formed on 3 November 1945 as the Korean Democratic Party by a mixed group of entrepreneurs, merchants, handicraftsmen, petite bourgeoisie, peasants, and Christians. The party's founders were motivated by anti-imperialist and anti-feudal aspirations, and aimed to eliminate the legacy of Japanese rule and build a new democratic society. The party came under greater influence of the ruling government over time, and today is under the effective control of the WPK.