Michael D'Antonio (born May 19, 1973) is an American musician, best known as the bass guitarist and founder of the metalcore band Killswitch Engage.

D'Antonio's writing influences include old New York Hardcore bands like Cro-Mags, Leeway, Madball and Agnostic Front, and he cites Cliff Burton of thrash metal band Metallica and Harley Flanagan of the Cro-Mags as personal influences.

All of Killswitch Engage's album artwork and tour merchandise is designed by D'Antonio, who is a graphic artist.

D'Antonio's company, DarkicoN design, produces artwork for bands such as Shadows Fall, Unearth, All That Remains, New England Metal and Hardcore Fest and Crowbar.

[1] D'Antonio's latest side project band is Death Ray Vision.