The Korea Democratic Party (KDP; ) was the leading opposition party in the first years of the First Republic of Korea. It existed from 1945 to 1949, when it merged with other opposition parties.
The U.S. military government considered the KDP a conservative group with high educational standards, and believed they sought to establish a Western-style democracy in Korea. However, modern South Korean political academia recognizes them as South Korea's first liberal party. Viewed as a party of the right, the character of the KDP was anti-communist, Confucian-conservative, and economically liberal. After Song was assassinated later in the year, he was succeeded as leader by Kim Seong-su. the party provided several of the key figures in the interim administration.