The American Union of Liberal Parties is a pan-national organisation uniting social liberal, economic liberal and libertarian parties across North America. It serves as one of the major international forums in North America, due to the predominance of several of its members in several North American nations, including Pacifica and New England.

The American Union of Liberal Parties was established in 1975 by Prime Minister of Pacifica Robert Straub and Chancellor of New England Michael Dukakis, who was later made Lord Dukakis, as a forum for cooperation between the National Secular Democratic Alliance of Pacifica and the New England Whig Party. The organisation later expanded, and currently has 9 members from around America, and 2 observer parties. The current head of the organisation is Chancellor of New England John Kerry.

Curiously, both the government and main opposition parties in New England and California are members of the organisation.

• Grand Duchy of Alaska: Alaskan People's Party
• ICMAG: Jacksonian Party
• Kingdom of New England: New England Whig Party
• Kingdom of New England: Libertarian Party of New England
• Republic of California: Liberal Democratic Party
• Republic of California: California Libertarian Party
• Republic of Florida: Union of Free Florida Democrats
• Republic of New York: New York Liberal Party
• Republic of Pacifica: National Secular Democratic Alliance of Pacifica
• United States of Nebraska and Kansas: Democratic Party of the United States

• Republic of Texas: Houston Party
• Aztlan: Aztlan Liberal Party

• Second Vermont Republic: Liberal Party of Vermont (not recognised by New England, but recognised by all other member parties)