George Horace Gallup Jr. (April 9, 1930 – November 21, 2011) was an American pollster, writer and executive at The Gallup Organization, which had been founded by his father, George Gallup.^[2] Gallup expanded the scope of the Gallup Poll to encompass a wider variety of topics, ranging from the outlook of American young people to religious beliefs.^[2] He also was an author, focusing on religion and spirituality in the United States.^[2] His works included The Saints Among Us, published in 1992, and The Next American Spirituality, published in 2002.^[2]

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Gallup was born in Evanston, Illinois, and graduated from the Lawrenceville School in 1948.^[3] He received a bachelor's degree in religion from Princeton University in 1953,^[2] and joined his father's polling company, The Gallup Organization a year later. He became co-chairmen of the company (with his brother Alex) upon their father's death in 1984,^[4] and worked there until his retirement in 2004.^[2]

Gallop was married to Kingsley Hubby, with whom he had three children. He was an Episcopalian, who once considered the ministry but instead served as an active layman.^[1]

He was diagnosed with liver cancer in 2010, and died in Princeton, New Jersey, on November 21, 2011, at the age of 81.^[2]