The Essential Ozzy Osbourne is a compilation album by British heavy metal singer Ozzy Osbourne, released in 2003. It reached No. 81 on US charts and No. 21 in the UK. Tracks featured here from the first two albums are the re-recorded versions from recent reissues (see Blizzard of Ozz and Diary of a Madman) as well as the remixed Bark at the Moon tracks. The album was certified Gold by the RIAA on 5 February 2005 with an excess of 500,000 copies sold, then certified Platinum by the RIAA on 3 March 2016. This compilation was re-released in 2009 as a Limited Edition 3.0 package with an additional disc of bonus songs that were not on the original release.
Note on album tracks from Blizzard of Ozz and Diary of a Madman: The album tracks are from the 2002 remasters, for which Blizzard of Ozz and Diary of a Madman were partially re-recorded. The original drum and bass tracks were replaced with recordings by Osbourne's then-current bassist Robert Trujillo and drummer Mike Bordin, as a management response to legal action by original bassist Bob Daisley and drummer Lee Kerslake for unpaid royalty fees.