Ánh Quang "Joseph" Cao is a Vietnamese–American politician who was the U.S. representative for Louisiana's 2nd congressional district from 2009 to 2011. A member of the Republican Party, he is the first Vietnamese American and first native of Vietnam to serve in Congress.

Vietnamese Americans are Americans of Vietnamese ancestry. They comprise approximately half of all overseas Vietnamese and are the fourth-largest Asian American ethnic group following Chinese Americans, Indian Americans, and Filipino Americans. There are approximately 2.3 million people of Vietnamese descent residing in the U.S. as of 2023.