John Breaux, American lawyer and politician
John Berlinger Breaux (; born March 1, 1944) is an American lobbyist, attorney and retired politician who was a member of the United States Senate from Louisiana from 1987 until 2005. He was also a member of the U.S. House of Representatives from 1972 to 1987. He was considered one of the more conservative national legislators from the Democratic Party. Breaux was a member of the New Democrat Coalition.

After his congressional tenure, he became a lobbyist, co-founding the Breaux-Lott Leadership Group. The firm was later acquired by law and lobbying firm Patton Boggs, now Squire Patton Boggs.