"I See the Light" is a song written by composer Alan Menken and lyricist Glenn Slater for Walt Disney Animation Studios' 50th animated feature film Tangled (2010). A duet originally recorded by American recording artist and actress Mandy Moore and American actor Zachary Levi in their respective film roles as main characters Rapunzel and Flynn Rider, the folk-inspired pop ballad serves as both the film's love and theme song. Lyrically, "I See the Light" describes the developing romantic relationship between Rapunzel and Flynn, and is featured as the seventh track on the film's soundtrack album.

Tangled was originally conceived by Disney animator Glen Keane. Subsequently, Walt Disney Animation Studios hired veteran Disney composer Alan Menken and lyricist Glenn Slater to write the film's songs. Initially, Menken and Slater had written a more anthemic version of "I See the Light" before finally re-working it into a gentler, simpler and more folk-oriented song. Menken would later reveal that, out of Tangled's five songs and musical numbers, he is most proud of "I See the Light".

"I See the Light" has inspired a generally mixed to positive reception from film and music critics, who were largely ambivalent towards the song's content, questioning its originality. However, the "lantern sequence" during which "I See the Light" is performed by Rapunzel and Flynn has enjoyed widespread critical acclaim, with journalists and commentators praising its visuals and use of 3D. Critically, both the song and the scene have been compared to similar romantic musical sequences from preceding Disney animated films, including "Kiss the Girl" from The Little Mermaid (1989) and "A Whole New World" from Aladdin (1992), both of which are love songs also composed by Menken.

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