Louis Bell is an American 🏷️#record-producer, vocal producer, songwriter, and mixing engineer working across pop, R&B, hip hop, and rock. He is best known for his long collaboration with Post Malone, beginning with the 2016 debut album Stoney, and has also worked with Taylor Swift, Justin Bieber, Camila Cabello, Halsey, and Miley Cyrus.

Bell began producing in Boston, where he built his own studio, before moving to Los Angeles in 2013. Billboard has credited him on 22 songs that reached the top ten of the Billboard Hot 100, 10 of them number ones; he topped Billboard's Hot 100 Producers chart in July 2019, and in April 2023 he became the first songwriter with eight RIAA diamond-certified singles. He signed an exclusive publishing deal with Universal Music Publishing Group in 2021, won iHeartRadio Music Awards for Producer of the Year (2019) and Songwriter of the Year (2020), and has received multiple Grammy nominations.