Frank Brandon Nelson (May 6, 1911 – September 12, 1986) was an American comedic actor best known for playing put-upon foils on radio and television, and especially for his "EEE-Yeeeeeeeeesssss?" catchphrase.  Nelson began his entertainment career in radio, and later moved into television and movies. In 1926, at age 15, Nelson played the role of a 30-year-old man in a series broadcast from KOA in Denver, Colorado.

In 1929, Nelson moved to Hollywood, California, and worked in local dramatic broadcasts, usually playing the leading man. The first sponsored program in which he appeared that reached a national market was Flywheel, Shyster, and Flywheel, a sitcom that aired from November 28, 1932, to May 22, 1933, starring Groucho and Chico Marx, and written primarily by Nat Perrin and Arthur Sheekman.

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