Black Sabbath is the debut studio album by English heavy metal band Black Sabbath, released on 13 February 1970 by Vertigo Records in the United Kingdom and on 1 June 1970 by Warner Bros. Records in the United States. The album is widely regarded as the first true heavy metal album, and the opening title track, "Black Sabbath", was named the greatest heavy metal song of all time by Rolling Stone, and has been referred to as the first doom metal song.

Black Sabbath received generally negative reviews from critics upon its release but was a commercial success, reaching number eight on the UK Albums Charts and number 23 on the US Billboard Top LPs chart. It has retrospectively garnered reappraisal as one of the greatest and most influential heavy metal albums of all time. Black Sabbath is included in Robert Dimery's 2005 musical reference book 1001 Albums You Must Hear Before You Die.