As Daylight Dies is the fourth studio album by American metalcore band Killswitch Engage. It was released on November 21, 2006 through Roadrunner Records. It was produced by Adam Dutkiewicz and Joel Stroetzel. It peaked at number 32 on the Billboard 200, selling up to 60,000 copies within its first week. It also peaked within the Rock, Hard Rock, and Digital Albums Charts. The album was certified Gold by the RIAA on June 30, 2009, which was on the same date of the release of its successor, Killswitch Engage. It has since gone on to sell more than 500,000 copies in the United States alone.
The album has received generally positive reviews from contemporary music critics. Thom Jurek of Allmusic praised the album, scoring it a four and a half out five, positively commenting, "If the cynics don't get it by now, they never will. For the rest, this is the album to come into the tent with." The tracks "This Is Absolution", "Unbroken", and "Eye of the Storm" were indicated as the AMG Track Picks. Raziq Rauf of Drowned In Sound also praised the album, scoring it a nine out of ten and saying, "With As Daylight Dies, Killswitch Engage have cemented their position as the reason for metalcore ever existing." .