"Light On" is a song by American singer and songwriter Maggie Rogers. It was released on October 10, 2018 as the fifth single of Rogers' major-label debut studio album, Heard It in a Past Life (2019). Rogers co-wrote the song with Kid Harpoon and both co-produced it with Greg Kurstin.

Margaret Debay Rogers is an American singer-songwriter and record producer from Easton, Maryland. After her song "Alaska" was played to artist-in-residence Pharrell Williams during a master class at the Clive Davis Institute of Recorded Music at the New York University Tisch School of the Arts in 2016, she gained widespread recognition. She has released two independent albums, The Echo (2012) and Blood Ballet (2014) and three studio albums, Heard It in a Past Life (2019), Surrender (2022) and Don't Forget Me (2024). She was nominated for the Grammy Award for Best New Artist in 2020.