Thomas Phillip O'Neill III (born September 20, 1944) is an American politician and lawyer. He leads a public relations and government affairs firm called O'Neill and Associates in Boston. He is the son of Thomas Phillip "Tip" O'Neill, Jr., who was Speaker of the United States House of Representatives from 1977 to 1987. From 1975 to 1983, O'Neill was Lieutenant Governor of the Commonwealth of Massachusetts.