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

Harold Frederick Pitcairn was an American aviation inventor and pioneer. He played a key role in the development of the autogyro and founded the Autogiro Company of America. He patented a number of innovations relating to rotary wing aircraft.

Joseph Roger O'Donnell was an American documentarian, photojournalist and a photographer for the United States Information Agency.

Francis Hopkinson was an author and composer. He designed Continental paper money, the first United States coin, and two early versions of the American flag, one for the United States and one for the United States Navy. He was also one of the signers of the Declaration of Independence in July 1776, as a delegate from New Jersey. He served in various roles in the early United States government including as a member of the Second Continental Congress and as a member of the Navy Board. He later became the first federal judge of the Eastern District Court of Pennsylvania on September 30, 1789.

Sandy Stewart is an American jazz and cabaret singer. Her son is jazz pianist Bill Charlap and her husband was Moose Charlap.

Robert King Merton was an American sociologist who is considered a founding father of modern sociology, and a major contributor to the subfield of criminology. He spent most of his career teaching at Columbia University, where he attained the rank of University Professor. In 1994 he was awarded the National Medal of Science for his contributions to the field and for having founded the sociology of science.

Alan Wendell Livingston was an American businessman best known for his tenures at Capitol Records, first as a writer/producer best known for creating Bozo the Clown for a series of record-album and illustrative read-along children's book sets. As Vice-President in charge of Programming at NBC, in 1959 he oversaw the development and launch of the network's most successful television series, Bonanza.

John Sherwood de Lancie, Jr. is an American actor, director, producer, writer, educator, and comedian, best known for his role of Q in various Star Trek series (1987–2020), beginning with Star Trek: The Next Generation. His other television series roles include Eugene Bradford in Days of Our Lives, Frank Simmons in Stargate SG-1 (2001–2002), and Donald Margolis in Breaking Bad (2009–2010), and the voice of Discord in My Little Pony: Friendship Is Magic (2010–2019).

Raymond Matthews Brown was an American jazz double bassist known for extensive work with Oscar Peterson and Ella Fitzgerald.

John Donald MacArthur was an American businessman and philanthropist who established the John D. and Catherine T. MacArthur Foundation, benefactor in the MacArthur Fellowships.

Gotthilf Heinrich Ernst Muhlenberg was an American clergyman and botanist.