Charles Henry Smith (June 15, 1826 – August 24, 1903) was an American writer and politician from the state of Georgia. He used the pen name Bill Arp for nearly 40 years. He had a national reputation as a homespun humorist during his lifetime, and at least four communities are named for him (Arp, Banks County, Georgia; Bill Arp, Georgia; Arp, Texas; and Arp, Tennessee).