"Butterfly" is a song by American singer-songwriter Mariah Carey from her sixth studio album, Butterfly. It was released as the second single from the album on December 1, 1997 by Columbia Records. The song was written by Carey and Walter Afanasieff; both of them producing and arranging the song as well. "Butterfly" is a ballad combining elements of pop and gospel genres. Carey had originally conceived it as a house record with David Morales titled "Fly Away (Butterfly Reprise)". After realizing how personal the lyrics were and how they could be applied to Butterfly, she wrote the album's title track with Afanasieff. On the song's lyrics, Carey sings to someone, telling them to spread their wings and release into the world on their own, like a butterfly. Carey described the song as her "favorite and most personal ballad".
The song's music video depicts Carey in an abandoned house, trapped in a desolate life. As the video progresses, she leaves, apparently for the first time in years, and runs into a nearby meadow. Towards the end, Carey jumps over a barbed fence and goes out into the world on a horse. The song's lyrics and video were directly connected to Carey's personal life at the time. "Butterfly" was performed live on The David Letterman Show, Saturday Night Live and various European television programs. The song was also a permanent part of the set-list during her Butterfly World Tour during 1998. Due to current conflict with Columbia, "Butterfly" was never issued a commercial release, therefore hindering its charting ability. The song performed weakly on the charts, peaking outside the top twenty in most countries, except for New Zealand, where it peaked at number fifteen. In the United States, "Butterfly" was not eligible to chart on the Hot 100 due to Billboard rules at the time.