John L. Gillin
John Lewis Gillin was an American sociologist, specializing in applied sociology, and the 16th president of the American Sociological Association. He was also active in the activities of the American Red Cross.
He was born in Hudson, Iowa.
He held positions as a professor of social sciences in the Iowa University and then University of Wisconsin.
In 1915, he co-authored, with Frank Wilson Blackmar, Outlines of sociology, described as "the first widely used introductory text" on sociology.
He was the father of John Philip Gillin, an anthropologist.