Leo Burnett (October 21, 1891 - June 7, 1971) was an American advertising executive and the founder of the Leo Burnett Company, Inc., also known as Leo Burnett Worldwide. He was responsible for creating some of advertising's most well-known characters and campaigns of the 20th century including Tony the Tiger, Charlie the Tuna, the Marlboro Man, the Maytag Repairman, United's "Fly the Friendly Skies," Allstate's "Good Hands," and for garnering relationships with multinational clients such as McDonald's, Hallmark and Coca-Cola. In 1999, Burnett was named by Time Magazine as one of the 100 most influential people of the 20th century.