"One Voice" is a song written by David Malloy and Don Cook, and recorded by American country music singer Billy Gilman. It was released in May 2000 as the lead-off single and title track from Gilman's debut studio album One Voice. The song became Gilman's first and only top 20 single on the Billboard Hot Country Singles & Tracks (now Hot Country Songs) chart as well as his only top 40 single on the all-genre Billboard Hot 100.