Herbert Leon "Sonny" Callahan (born September 11, 1932) is an American businessman and politician from Alabama.
After being elected as a Democrat from Mobile to the state house and senate, he shifted to the Republican Party after losing a race for Lieutenant Governor of Alabama in 1982.
Callahan was repeatedly elected as a Republican to the United States House of Representatives, serving from 1985 to 2003.
Afterward he established his own lobbying firm and continued to be active in the Republican Party.