John Roberts Tunis (December 7, 1889 – February 4, 1975), "the 'inventor' of the modern sports story", was an American writer and broadcaster. Known for his juvenile sports novels, Tunis also wrote short stories and non-fiction, including a weekly sports column for the New Yorker magazine. As a commentator Tunis was part of the first trans-Atlantic sports cast and the first broadcast of the Wimbledon Tennis Tournament to the United States.