Casey Viator, American bodybuilder and journalist (b. 1951)
Casey Viator (September 4, 1951 – September 4, 2013) was an American professional bodybuilder. He is noted as the youngest ever AAU Mr. America - gaining the title at the age of 19 in 1971.

Viator grew up in New Iberia, Louisiana and began training with Kenwood Broussard. In 1968, Viator placed third in the Mr. Louisiana contest. The following year, he came in sixth in the 1969 Teen Mr. America, but won in the categories Best arms, Best Abs, Best Chest, Best Legs and Most Muscular. In 1970, Casey Viator's upper arm measured at 19 5/16 inches, and his forearm at 15 7/16 inches.

He trained under the guidance of Arthur Jones for ten months prior to the Mr. America contest at DeLand High School in DeLand, Florida. The two first met briefly at the 1970 Mr. America contest in Los Angeles, California, where Viator placed third. Realizing Viator's potential, Jones offered Viator a job at his business Arthur Jones Productions later known as Nautilus Sports Medicine.

Viator won three separate bodybuilding championships; Teen Age Mr. America, Jr. Mister America, and lastly, the title of Mr. America. In 1982 he capped off his bodybuilding career by placing third in the Mr. Olympia competition.

Viator was a writer for Muscle & Fitness and Flex magazines.

Viator died on September 4, 2013 due to a massive heart attack on his 62nd birthday.