Jonathan Dette (born April 19, 1970) is an American heavy metal drummer best known for his time in Slayer and Testament.

[3] In the summer of 1994, Dette received the opportunity to audition for thrash metal band Testament, following the departure of John Tempesta, who had left to join White Zombie.

[3] The initial offer had gone to Gene Hoglan who had just finished touring with Death, as he was a long time friend of the band, however, due to Dette's persistence and energy, they gave the gig to him.

[8] While on the Australia tour with Anthrax, Dette received a call from Kerry King, inquiring if he could once again fill-in for Slayer, this time replacing Dave Lombardo, outright.

[11] Later that year, Iced Earth hired Dette to play with them, covering for Raphael Saini, who had previously filled in during a tour with Volbeat.

[3] Current Former Live AniMetal USA Testament Evildead Slayer[15] Meshiaak Impellitteri Heathen[15]