Ammo (born Joshua Coleman) is an American record producer and songwriter. Ammo has co-written and produced songs for Beyoncé, Kesha, Katy Perry, Pitbull, Maroon 5, Britney Spears, Jessie J, Jason Derulo, Mike Posner, Fifth Harmony, R. Kelly, Flo Rida, and Selena Gomez. Ammo has contributed to hits such as Maroon 5's "Sugar", Katy Perry's "E.T.", and Fifth Harmony's "Work from Home".