George Horace Gallup (November 18, 1901 – July 26, 1984) was an American pioneer of survey sampling techniques and inventor of the Gallup poll, a successful statistical method of survey sampling for measuring public opinion.

Gallup is a graduate of The Lawrenceville School and the University of Iowa, where he was a football player and editor of school paper The Daily Iowan. He earned his B.A. in 1923, his M.A. in 1925 and his Ph.D. in 1928.

In 1936, his new organization achieved national recognition by correctly predicting, from the replies of only 5,000 respondents, that Franklin Roosevelt would defeat Alf Landon in the U.S. Presidential election. This was in direct contradiction to the widely respected Literary Digest magazine whose poll based on over two million returned questionnaires predicted that Landon would be the winner. Not only did Gallup get the election right, he correctly predicted the results of the Literary Digest poll as well using a random sample smaller than theirs but chosen to match it.