Thomas Troelsen (born 6 October 1981) is a Danish singer, songwriter, and producer from Skive. Troelsen has written and produced songs for Pitbull, Flo Rida, Justin Bieber, David Guetta, Lil Wayne, Nile Rodgers, Jason Derulo, Charlie Puth, Chris Brown, Afrojack, Akon, Meghan Trainor, SHINee, EXO, NCT Dream and Junior Senior.
In 2018, Troelsen co-wrote "Say My Name" by David Guetta featuring J Balvin and Bebe Rexha. He also co-wrote, co-produced and is a featured vocalist on the Lil Wayne song "Can't Be Broken" from the platinum album Tha Carter V.
In 2016, Troelsen co-wrote "I Love Me" by Meghan Trainor and This One's For You by David Guetta featuring Zara Larsson, the UEFA 2016 official song.
In 2015, Troelsen co-wrote the song "Company" by Justin Bieber from his album Purpose. He also wrote 3 songs for Flo Rida, including the single "I Don't Like It, I Love It" featuring Robin Thicke, and the single "Heatwave" for Robin Schulz featuring Akon.
In 2014, Troelsen co-wrote and co-produced "We Are One (Ole Ola)", the Official 2014 FIFA World Cup Song, featuring Pitbull and Jennifer Lopez.