Terence Hallinan was an American attorney and politician from San Francisco, California. He was the second of six sons born to Progressive Party presidential candidate Vincent Hallinan and his wife, Vivian (Moore) Hallinan. Hallinan was educated at the London School of Economics, University of California, Berkeley, and University of California, Hastings College of the Law. He practiced privately in San Francisco.

Vincent Hallinan was an American lawyer and candidate for President of the United States in the 1952 election on the Progressive Party ticket.