Pentagram is an American heavy metal band from Alexandria, Virginia, noted as one of the pioneers of heavy metal, and the sub-genre of doom metal in particular. As such, they are considered one of the "big four of doom metal," alongside Candlemass, Saint Vitus, and Trouble.

The band was prolific in the underground scene of the 1970s, producing many demos and rehearsal tapes, but did not release a full-length album until re-forming in the early 1980s with an almost completely new line-up. Throughout the band's history, the only constant member has been vocalist Bobby Liebling. The Pentagram has featured the Obsessed, Place of Skulls, Internal Void, and Spirit Caravan, among others. The band's current line-up consists of Liebling (vocals), Tony Reed (guitar), Scooter Haslip (bass), and Henry Vasquez (drums).