Anh "Joseph" Quang Cao (Vietnamese: Cao Quang Ánh pronounced /gaʊ/; Gow^[3]) (born March 13, 1967) is a New Orleans lawyer and a U.S. Representative from Louisiana's 2nd congressional district. He is a member of the Republican Party. On December 6, 2008, Cao defeated nine-term Democratic U.S. Representative William Jefferson with 49.6 percent of the vote to Jefferson's 46.8 percent. Cao is the first Vietnamese-American as well as the first native of Vietnam to serve in Congress. He won in a district that usually votes overwhelmingly Democratic.

Cao previously ran unsuccessfully as an independent for District 103 of the Louisiana House of Representatives.^[4] He was a delegate to the 2008 Republican National Convention.^[5] Cao is a member of the Orleans Parish Board of Election Supervisors.^[6] A devout Roman Catholic, he is a board member for Mary Queen of Vietnam Catholic Church's Community Development Corporation^[7] which assists Vietnamese-Americans with hurricane relief,^[8] and is a member of the National Advisory Council of the U.S. Conference of Catholic Bishops.^[9]