Sir Lord Baltimore was an American rock band from Brooklyn, New York, United States, formed in 1968 by lead vocalist/drummer John Garner, guitarist Louis Dambra, and bass player Gary Justin. Some have cited the 1971 review of their debut record, Kingdom Come, in Creem magazine as containing the first documented use of the term "heavy metal" to refer to a style of music; the truth is the same reviewer used the term when reviewing a Humble Pie album in Rolling Stone six months earlier. Sir Lord Baltimore featured a drumming lead singer, traditionally a rarity in rock and metal music. The group have been called "the godfathers of stoner rock."

In 2006, Garner and Dambra reunited as Sir Lord Baltimore and released a new album, Sir Lord Baltimore III Raw. The reformed band featured an overt Christian focus and lyrics, an emphasis not found in their earlier work. Justin, no longer an active musician, did not participate. Garner died on December 5, 2015, of liver failure, ending the band.