Morten "Diesel" Dahl (bornJune 19, 1959 in Trondheim, Norway) is the drummer and co-founder of the Norwegian hard rock band TNT (1982–1988, 2000–present).
He started playing the drums at the age of 15, and played in bands like Burn, Edge and Hotlips before he formed TNT together with vocalist Dag Ingebrigtsen in 1982. Dahl played on the first three TNT albums and co-wrote their biggest hit, "10,000 Lovers (In One)", before he decided to quit in October 1987. The following year he formed the band TinDrum, who got a national number 1 hit with "Drums of War".
In the early 1990s Dahl joined the local Hells Angels motorcycle club in Trondheim and became their spokesperson. Throughout the 90s he played in various bands, such as Diesel Dahl & Friends and Diezel, before he officially reunited with TNT in 2000. He left Hells Angels in 2005.
His daughter Carina Dahl is a singer and glamour model.