William Wendell "Billy" Gilman III (born May 24, 1988) is an American country music artist from Rhode Island. He is best known for his debut single "One Voice", which became a Top 40 hit on the Billboard Hot 100 and a Top 20 hit on the Billboard Hot Country Songs chart in 2000. 11 years old at the time, he became the the youngest artist to ever have a Top 20 single on the country chart. His debut album, album of the same name was released later that year on Epic Records, and was certified double platinum in the United States. His Christmas album Classic Christmas and second studio album Dare to Dream, were both certified gold.
He exited Epic's roster and was signed to Image Entertainment in 2005 releasing Everything and More. In 2006, he released the self-titled Billy Gilman. After a number of non-charting releases from 2006 to 2009, followed by a hiatus until 2013, he returned in 2014 with a new single "Say You Will" released independently on his own record label One Voice Productions.