"4 in the Morning" is a song written by Gwen Stefani and Tony Kanal for Stefani's second solo album The Sweet Escape (2006). The song is a 1980s-inspired ballad that Stefani began writing while pregnant and finished with No Doubt bandmate Tony Kanal. It generally received positive reviews from music critics.

The song was released as the album's third single in 2007 (see 2007 in music). It was commercially unsuccessful in the United States but fared somewhat better worldwide. Stefani has stated that "4 in the Morning" is one of her favorite songs from The Sweet Escape.