Vietnamese Constitutional Monarchist League (VCML; Vietnamese: Liên Minh Quân Chủ Lập Hiến Đa Nguyên Việt Nam) is a monarchist and anti-communist organization based in the United States, which seeks the restoration of the Nguyễn dynasty to the throne of Vietnam under a constitutional monarchy, similar to those in Cambodia and Thailand.

[1] The VCML was established in 1993 by its current President and Regent of the Imperial Nguyen dynasty Nguyễn Phúc Bửu Chánh, a member of the Vietnamese royal family who fled from South Vietnam for political reasons after 1975.

His son, Crown Prince Bảo Long, intentionally remained out of politics[4] and lived quietly in Paris, France until his death on 28 July 2007.

The VCML believes that "only the limited monarchy of the Imperial Nguyen Dynasty can succeed in preserving the cultural independence of Vietnam" and that "only a government that upholds Vietnamese nationalism and personal freedom can fully succeed in restoring the nation".

[3] The VCML has repeatedly denounced the communist government of Vietnam over corruption and human rights abuses.