Anthon is a city in Woodbury County, Iowa, United States. It is part of the Sioux City, IA–NE–SD Metropolitan Statistical Area. The population was 545 at the 2020 census. Anthon was home to Charles Osborne, who had the hiccups continuously for 68 years, and was featured in the Guinness Book of World Records. It was also home to eunuchoidal giant Bernard Coyne, who was over 8 feet tall. Anthon was named for J. C. Anthon, a railroad engineer. It was founded in 1888.