Relentless is the debut studio album by American doom metal band Pentagram.

It was self-released in 1985 as Pentagram, but was reissued by Peaceville Records in 1993 with the new title and reordered track listing.

The band decided to re-record some vocals and guitar parts in 1984 and created a complete new mix for their self-released debut album.

The 1984 remix of the recordings appeared only on first-edition vinyl copies of the album (those with the purple logo on the cover) and that mix was never released on CD or later vinyl pressings.

When Peaceville reissued the album on CD in 1993, they restored the original 1982 mix and track listing to save the original spirit and charm of the recordings.