Donald 'DT' Tardy (born January 28, 1970) is the drummer of death metal band Obituary and the brother of John Tardy, who is the lead singer of the band. Besides Obituary, they have a band called Tardy Brothers, where, as primary songwriter and engineer, Donald also plays guitar and bass, as well as drums. Donald also played drums for Andrew W.K on the album I Get Wet and was Andrew W.K.'s first touring drummer who also assisted with assembling the original Andrew W.K. lineup.
Donald (along with the entire Obituary band) has a passion for helping cats through their Cat sanctuary organization Metal Meowlisha. When the band is on tour, their wives work hard to keep the organization running.