- Alex Niceforo: Niceforo has co-written several songs with Lovato, including "Skyscraper," "Neon Lights," and "Confident."
- Mitchy Collins: Collins has also co-written a number of songs with Lovato, including "Heart Attack," "Give Your Heart a Break," and "Sorry Not Sorry."
- Ryan Tedder: Tedder is best known for his work with OneRepublic, but he has also co-written several songs with Lovato, including "Skyscraper," "Neon Lights," and "Confident."
- Julia Michaels: Michaels is a relatively new songwriter, but she has quickly made a name for herself by writing songs for artists like Justin Bieber, Selena Gomez, and Demi Lovato. She co-wrote "Sorry Not Sorry" with Lovato and Mitchy Collins.
- BloodPop: BloodPop is an electronic music producer and songwriter who has worked with artists like Justin Bieber, Lady Gaga, and Demi Lovato. He co-produced Lovato's album Tell Me You Love Me.
In addition to these songwriters, Lovato has also worked with many other talented musicians, producers, and engineers on her music. She is always open to collaborating with new people, and she is constantly looking for new ways to grow as an artist.