"All Through the Night" is a song by American singer-songwriter Cyndi Lauper, released from her debut album She's So Unusual. It was written by Jules Shear for his album Watch Dog, as a mid-tempo folk-rock song. After The Cars recorded their own version, which they did not use on any of their albums, Lauper decided to cover it. Although she initially intended to do a straight cover of Shear's version, she turned it into a pop ballad instead.

The song was the only single released worldwide by Lauper that did not have a music video. It peaked at number five on the Billboard Hot 100, becoming Lauper's fourth top five single in the U.S. Lauper became the first woman in the 26-year history of Billboard to take four singles from the same album to Top 5 on the Hot 100. The song was mostly positively received by critics. An acoustic version was sung by Lauper on her 2005 album, The Body Acoustic. In this version, Shaggy provided backing vocals.

The song was originally written by Jules Shear, and included on his 1983 debut solo album, Watch Dog. Shear later recalled in an interview, "[it's] like a big bonus really. Cyndi Lauper does a song ('All Through the Night') that's on a solo record of mine. I just thought, 'No one's really going to hear this.' Then she does it, and it becomes a Top 5 song." "I'm just glad people know the songs, really. I think they're really good. The only problem is with people who don't know I wrote them. I do them and they think, 'God, he's doing that Cyndi Lauper song.'"

Before Lauper covered the song, the band The Cars produced an early version of it that was not released. (Elliot Easton of the Cars had played guitar on Shear's original recording, which is most likely where the Cars heard the original tune.) Shear's version was originally a folk-rock song, but Lauper instead turned it into a pop ballad for her album, with a heavy emphasis on a synthesizer. According to Lauper, she wanted it to be just like Shear's version, with a bit more of an acoustic sound. However, she changed her mind, saying that she wanted to sing it like herself. Unlike her other singles from the album, this one did not have a music video released with it.

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