Justin Drew Tranter (born June 16, 1980) is an American songwriter, singer, and activist.
They have written songs for Britney Spears, Gwen Stefani, Linkin Park, Kelly Clarkson, Selena Gomez, Justin Bieber, DNCE, Kesha, In Real Life, Fifth Harmony, 5 Seconds of Summer, Ariana Grande and Fall Out Boy, and frequently co-writes with fellow American songwriter Julia Michaels.
Tranter was the lead singer of Semi Precious Weapons, a rock band based in New York.
They are also a board member of GLAAD, an organization that promotes LGBTQ acceptance in the entertainment and news industries.