"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. Lyrically, the song is about violence from the viewpoint of a child.

Gilman was only 12 years old at the time of the song's release, making him youngest male artist in history to have a solo Top 40 hit on the country charts. "One Voice" was nominated at the 43rd Grammy Awards for Best Male Country Vocal Performance and Best Country Song for the songwriters, Don Cook and David Malloy.

Directed by Trey Fanjoy, the video shows Billy Gilman on the bus home from school and watches everything that goes on around him. At one point in the video, a boy holding a gun (shown earlier in the video) throws it in the river below the bridge, is a similar take on the line of the song.

US CD single

UK CD single

"One Voice" debuted at number 71 on Billboard's Hot Country Singles & Tracks chart for the chart week of May 27, 2000. When the song became a Top 40 hit, Gilman became the youngest artist to chart a Top 40 country hit, edging out Brenda Lee to become the youngest person to ever have a song on the country singles chart. The song also became a Top 40 hit on the Billboard Hot 100 chart, reaching number 38.

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