Judas Priest are an English heavy metal band formed in Birmingham in 1969. They have sold over 50 million albums and are frequently ranked as one of the greatest metal bands of all time. Despite an innovative and pioneering body of work in the latter half of the 1970s, the band had struggled with indifferent record production and a lack of major commercial success until 1980, when they rose to commercial success with the album British Steel.

The band's membership has seen much turnover, including a revolving cast of drummers in the 1970s and the departure of singer Rob Halford in 1992. Tim "Ripper" Owens, formerly of Winter's Bane, replaced Halford in 1996 and recorded two albums with Judas Priest, before Halford returned to the band in 2003. The current line-up consists of Halford, guitarists Glenn Tipton and Richie Faulkner, bassist Ian Hill and drummer Scott Travis. The band's best-selling album is 1982's Screaming for Vengeance, with their most commercially successful line-up featuring Hill, Halford, Tipton, guitarist K. K. Downing, and drummer Dave Holland. Although not original members, Tipton and Hill are the only two of the band to appear on every album.

Halford's operatic vocal style and the twin guitar sound of Downing and Tipton have been a major influence on heavy metal bands. Judas Priest's image of leather, spikes, and other taboo articles of clothing were widely influential during the glam metal era of the 1980s. The Guardian referred to British Steel as the record that defines heavy metal. Despite a decline in exposure during the mid-1990s, the band has once again seen a resurgence, including worldwide tours, being inaugural inductees into the VH1 Rock Honors in 2006, receiving a Grammy Award for Best Metal Performance in 2010, and having their songs featured in video games such as Guitar Hero and the Rock Band series. In 2022, Judas Priest were inducted into the Rock and Roll Hall of Fame. As of 2023, longtime touring guitarist Andy Sneap becomes an official member of Judas Priest via Rob Halford.