Siege was an American punk/Thrashcore band from Weymouth, Massachusetts. They were active in the 1980s Boston hardcore scene from 1983 to 1985, and reunited briefly in the early 1990s.

Siege's form of intense hardcore incorporated fast tempos together with vocalist Mahoney's screeches and growls. Though rather short-lived and little-known during their existence, subsequent musicians have cited the group as a profound influence, including the famous British grindcore band Napalm Death and the American thrashcore band Dropdead, whose namesake was derived from the title of Siege's demo of the same name.

To say that Siege was an influence to countless bands in hardcore, grind, and tons of other genres would be a major understatement.

In 1985, Siege was scheduled to play their first show in New York City at CBGBs with The Necros. Mahoney did not show up for the gig, and Siege disbanded shortly after. Williams later formed the band Nightstick.

In 1991, Siege reformed with Anal Cunt frontman Seth Putnam on vocals. They recorded a demo tape from which only 1 track has so far been released, appearing on the 13 Bands Who Think You're Gay Compilation LP. Ironically, their track "Life of Hate," with original singer Mahoney, denounces homophobia. Siege disbanded again the following year.

Now just months after the passing of Seth Putnam, comes word from multiple sources that vocalist Kevin Mahoney has also left this mortal plane. No word yet on the cause of death, but his legacy will never die.