The Kuomintang of China (abbreviation KMT) , also often translated as the Chinese Nationalist Party, is a political party in the Republic of China (ROC), located in Taiwan, and is currently the largest political party in terms of seats in the Legislative Yuan, and the oldest political party in the Republic of China. The KMT is a member of the International Democrat Union rather than the Socialist International.

Together with the People First Party and Chinese New Party, the KMT forms what is known as the Taiwanese Pan-Blue coalition, which supports eventual reunification with the mainland. However, the KMT has been forced to moderate their stance by advocating political and legal status quo of modern Taiwan. The KMT accepts a one-China policy but, in an interview on CNN's TalkAsia television program, then-chairman Ma Ying-jeou stated that the KMT's definition of "One China" means the Republic of China and not the People's Republic of China.

The KMT originated in China in 1912, founded by Song Jiaoren and Sun Yat-sen shortly after the Xinhai Revolution. Later led by Chiang Kai-shek, it ruled much of China from 1928 until its retreat to Taiwan in 1949 after defeat by the Chinese Communist Party (CCP) during the Chinese Civil War. There, the KMT controlled the government under a single party state until reforms in the late 1970s through the 1990s loosened its grip on power. The ROC was once referred to synonymously with the KMT and known simply as "Nationalist China" after its ruling party.