List of Famous people born in Pennsylvania, United States of America

David Joseph Bohm was an American scientist who has been described as one of the most significant theoretical physicists of the 20th century and who contributed unorthodox ideas to quantum theory, neuropsychology and the philosophy of mind.

Robert Charles Morlino was an American prelate of the Roman Catholic Church who served as the Bishop of Madison, Wisconsin, from 2003 until his death in 2018. He was the Bishop of Helena, Montana, from 1999 to 2003. Morlino was widely perceived as a conservative bishop.

Martin Nicholas Lohmuller, DD, JCD was an American prelate of the Roman Catholic Church. He served as an auxiliary bishop of Philadelphia from 1970 to 1994. At the time of his death, he was the oldest American Catholic bishop.

James Hadley Billington was a American academic and author who taught history at Harvard and Princeton before serving for 42 years as CEO of four federal cultural institutions. He served as the 13th Librarian of Congress after being nominated by President Ronald Reagan in 1987, and his appointment was approved unanimously by the U.S. Senate. He retired as Librarian on September 30, 2015.

Joe Masteroff was an American playwright.

William Christian Bullitt Jr. was an American diplomat, journalist, and novelist. He is known for his special mission to negotiate with Lenin on behalf of the Paris Peace Conference, often recalled as a missed opportunity to normalize relations with the Bolsheviks. He was also the first U.S. ambassador to the Soviet Union and the U.S. ambassador to France during World War II. In his youth, he was considered a radical, but he later became an outspoken anticommunist.

Fabiano Anthony Forte, professionally known as Fabian, is an American singer and actor.

Ralph John Cicerone was an American atmospheric scientist and administrator. From 1998 to 2005, he was the chancellor of the University of California, Irvine. From 2005 to 2016, he was the president of the National Academy of Sciences (NAS). He was a "renowned authority" on climate change and atmospheric chemistry, and issued an early warning about the grave potential risks of climate change.

Richard Joseph Anuszkiewicz was an American painter, printmaker, and sculptor.

Tom Regan was an American philosopher who specialized in animal rights theory. He was professor emeritus of philosophy at North Carolina State University, where he had taught from 1967 until his retirement in 2001.