John Netherland Heiskell was a prominent American newspaper editor who served briefly in the United States Senate after being appointed to fill a vacancy. He was the editor of the Arkansas Gazette from 1902 until his death, and served in the United States Senate from Arkansas briefly in 1913. As the result of his long life, Heiskell attained several Senate longevity records, and was the second U.S. Senator to reach the age of 100.