"Let the Light In" is a song by American singer and songwriter Lana Del Rey featuring fellow American singer-songwriter Father John Misty from her ninth studio album, Did You Know That There's a Tunnel Under Ocean Blvd (2023)

Del Rey has previously worked with Father John Misty several times in the past, most notably, he features in the music video for Del Rey's song "Freak". Del Rey featured on Father John Misty's album Chloë and the Next 20th Century where she covered the track "Buddy's Rendezvous". The song was released onto streaming platforms on March 24, 2023, coinciding with the release of the album.

PopMatters said of the song "Two songs later, after another involuted and long-titled song about the Grants, comes 'Let the Light In', an explicit restatement of the theme. It's a beautifully harmonized duet with Father John Misty based on the album's best-developed chord structure—a gorgeous song. By now, light is getting in all over this album, and on 'Let the Light In', the light is trying to bring love in through the cracks along with it."^[1] Meanwhile, Clash had to say of the song "A much stronger duet can be found on 'Let the Light In', its brooding country landscapes augmented by a cameo from Father John Misty, an apt foil for Lana's voice amid this swirling salute to the Bakersfield Sound."^[2]