Death Angel is an American thrash metal band from Daly City, California, initially active from 1982 to 1991 and again since 2001. They have released nine studio albums, two demo tapes, one box set and three live albums. The band has gone through several line-up changes, leaving guitarist Rob Cavestany as the only constant member; he and vocalist Mark Osegueda (who joined the group in 1984) are the only members of to appear on all of their studio albums.

Death Angel is considered one of the key bands in the Bay Area thrash metal movement of the 1980s, and secured opening slots at club venues that decade, including opening for their peers Megadeth, Metallica, Slayer, Exodus, Testament, Overkill, D.R.I., Mercyful Fate and Possessed. They are also often credited as one of the leaders of the second wave of thrash metal movement from the 1980s, and considered one of the "Big Eight" of the genre (along with Metallica, Megadeth, Slayer, Anthrax, Testament, Exodus and Overkill), as well as one of the so-called "Big Six of Bay Area thrash metal" (alongside Exodus, Testament, Lȧȧz Rockit, Forbidden and Vio-lence). Following the underground success of their first two studio albums, The Ultra-Violence (1987) and Frolic Through the Park (1988), Death Angel signed to Geffen Records in 1989, and released their only album for the label, Act III, the following year.

While touring in support of Act III, then-drummer Andy Galeon was injured in a bus accident and took over a year to fully recover. This resulted in the band's break-up in 1991. Death Angel reformed in 2001 (without original rhythm guitarist Gus Pepa) at the Thrash of the Titans benefit concert for Testament singer Chuck Billy, and the band has since released six more albums, including Humanicide (2019), whose title track gave Death Angel a Grammy Award nomination. They are currently working on their tenth studio album, which is tentatively due in 2025. The band holds a semi-regular Christmas concert.